Mathematics College

helpppp!!!!!!!!!!!!!!!!!!!!!

Answers

Answer 1

Answer:

Below

Step-by-step explanation:

DO=15

OB=3x+7

DB=9x-2

O is between D and B

So,

OB+DO=DB

or, 9x-2+3x+7=15

or, 12x=15-5

or, x=10/12

Thus, x=5/6

Answer 2

the answer is x=5/6
you are welcome
sorry if it’s wrong

Related Questions

Noah bought 5 pounds of onions at $2 per pound and a bag of salad greens for $4. How much money did he spend?cant someone help me please

Answers

5 pounds of onions 2$ each = 10$
A bag of salad greens for 4$ = 4$

10$ + 4$ = 14$

The answer is B.

A student says that if 5x2 = 20, then x must be
equal to 2. Do
you agree or disagree with the
student? Justify your answer.

Answers

Answer:

I agree with the student's answer. "x" cannot be -2 because then it would make -20 which is not equal to 20:

5(-2)(2) = ?

-10 x 2 = ?

? = -20

-20 ≠ 20

Step-by-step explanation:

Justificaiton:

5(x)(2) = 20

10(x) = 20

10/10(x) = 20/10

x = 2

Second Justification:

5(x)(2) = 20

5/5(x)(2) = 20/5

2x = 4

2x/2 = 4/2

x = 2

Answer:

Step-by-step explanation:

can someone who's really good at math help me with this?
for f(x) evaluate each of the following:
a. f(0)
b. f(6)
show all your work

Answers

Answer:

Step-by-step explanation:

f(0) is just the function f(x) evaluated at 0, meaning we need to plug in 0 to the function.

What piece of this function should we plug 0 in? Well, because 0 is less than 5, plug it into the first piece.

so f(0) = 0 + 4 = 5

By similar reasoning:

f(6) = 8

because 5 <= 6 < 7

I NEED HELP IM DOING A EXAM
Solve the equation and check your solution.
1. 3(x+6)=18+3x
2. -2(x-1)=2-2x
3. x+4=-2+x
4. -2(x+2)=5-2x

Answers

Answer:

1.0

2.0

3.2

4.3

Step-by-step explanation:

1.3x+18-3x+18

2.-2x+2-2+2x

3.x-x+4-2

4.-2x-4+5+2x

Answer:

3x + 18 = 18 + 3x-2x + 2 = 2 - 2x4 = -2 (the statement is false)-4 = 5 (the statement is false)

.......

how to answer tyhis question plz i need help quick

Answers

In your problem, the aqueduct rises 3 meters (Rise= 3) for every kilometer (1,000 meters) in length (Run = 1,000), so the slope is Rise/Run=3/1000=0.003.

Does this help?

Which type of imaginary line runs parallel to the Equator on a map?

A. latitude
B. longitude
C. meridian
D. polar

Answers

Answer:

A i dont know i think it is i dont know correct me if im wrong

Answer:

A. latitude

Step-by-step explanation:

The type of imaginary line that runs parallel to the Equator on a map:

A. latitude

7 - 3x = 2x + 7 – 5x
Step by step

Answers

Answer:

Step-by-step explanation:

7-7=2x-5x+3x

0=2x-5x+3x

Clever.com
S
55°
W
Angle STV is a right angle.
The measure of angle STW is 55°.
The measure of angle WTV is xº.
What is the value of x?
to
Х
5
=
?

Answers

Answer:

x= 35

Step-by-step explanation:

STV°= WTV° + STW°

STV°=90

WTV°=x

STW°=55

subtitute in above:

90= x + 55

x= 90-55

x= 35

What is the mode of
2,2,3,4,4,5,5,5,6,6

Answers

Answer:

mark me as brainliest please

Step-by-step explanation:

Jasmine bought 3500g of flour. She used 3/7 of it to bake some tarts and 700g of it to bake a cake. Find the ratio of the amount of flour used for baking the cake to the amount of flour used for baking the tarts to the remaining amount of flour.

Answers

Answer: 15:13

Step-by-step explanation: 7/7=3500

1/7=3500÷7=500500x3=15001500+700=22003500-2200=13001500:130015 : 13 (if there is a need to simplify the ratio)

1. Which of the following is NOT equivalent to
"3 times the sixth power of 10?"
A 3 X 106
B 3,000,000
© 3 X 10 X 6
D 3 X 1,000,000

Answers

Answer: C

Step-by-step explanation:

This is 3 times 10 times 6, not 3 times the sixth power of 10.

Help with this question.

Answers

9514 1404 393

Answer:

119°

Step-by-step explanation:

Angles DHG and LHI are vertical angles, so have the same measure.

angle LHI = 119°

19 = -4 + 2/5x + 10

Step by step

Answers

Answer:

[tex]x = \frac{2}{65} [/tex]

Step-by-step explanation:

[tex]19 = - 4 + \frac{2}{5x} + 10[/tex]

[tex]19 = 6 + \frac{2}{5x} [/tex]

[tex] - \frac{2}{5x} = 6 - 19[/tex]

[tex] - \frac{2}{5x} = - 13[/tex]

[tex]2 = 65x[/tex]

[tex]x = \frac{2}{65} [/tex]

Solve the equation: 6/2(1+2) =?

Answers

Answer:

answer must be 9

Step-by-step explanation:

6/2×3

3×3

9 ans

Answer: 9

Step-by-step explanation:

( 6/2) = 3

( 1+2) = 3

3*3=9

Let A be a 4 x 5 matrix and Let B be a 4 x 4 matrix. Suppose you were asked to multiply matrix A times matrix B. When multiplied the resulting solution of multiplying matrix A times matrix B will be a 4x 4 matrix.

a. True
b. False

Answers

Answer:

b. false

Step-by-step explanation:

when multiplying matrixes the number of columns of the first matrix must be equal as the number of rows of the second matrix, and since here matrix A has 4 columns but matrix B has 5 rows they can't be multiplied

find the distance between the two points rounding to the nearest tenth (4,0) and (0,9)

Answers

Answer:

[tex]\boxed {\boxed {\sf 9.8}}[/tex]

Step-by-step explanation:

We are asked to find the distance between two points. We will calculate the distance using the following formula;

[tex]d= \sqrt {(x_2-x_1)^2+(y_2-y_1)^2[/tex]

In this formula, (x₁ , y₁) and (x₂ , y₂) are the 2 points. We are given the points (4,0) and (0,9). If we match the value and the corresponding variable, we see that:

x₁= 4 y₁= 0 x₂= 0 y₂= 9

Substitute the values into the formula.

[tex]{d= \sqrt {(0-4)^2+(9-0)^2[/tex]

Solve inside the parentheses.

(0-4)= -4 (9-0)= 9

[tex]d=\sqrt{(-4)^2+ (9)^2[/tex]

Solve the exponents. Remember that squaring a number is the same as multiplying it by itself.

(-4)²= -4*-4= 16 (9)²= 9*9= 81

[tex]d= \sqrt{(16)+(81)[/tex]

Add.

[tex]d= \sqrt{97[/tex]

Take the square root of the number.

[tex]d=9.848857802[/tex]

Round to the nearest tenth. The 4 in the hundredth place tells us to leave the 8 in the tenth place.

[tex]d\approx 9.8[/tex]

The distance between the two points (4,0) and (0,9) is approximately 9.8

A triangle has side lengths of (7n-2p) centimeters, (2n+4q) centimeters, and (q-5p) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

Answers

Answer:

It is 9n - 7p + 5q

Step-by-step explanation:

Perimeter formular:

[tex]perimeter = (side + side + side)[/tex]

substitute:

[tex]p = \{(7n - 2p) + (2n + 4q) + (q - 5p) \} \\ [/tex]

group like terms together:

[tex] = (7n + 2n) + ( - 2p - 5p) + (4q + q) \\ = 9n - 7p + 5q[/tex]

pls help! I need the answer quickly!

Answers

Answer: Factor of 2

========================================================

Explanation:

Let's say we had a circle with radius 5

It's area would be

A = pi*r^2

A = pi*5^2

A = 25pi

Now let's increase this by a factor of 4. We'll multiply the area by 4

new area = 4*(old area) = 4*(25pi) = 100pi

Now, we'll use this area value to find what the radius must be

A = pi*r^2

100pi = pi*r^2

100 = r^2

r^2 = 100

r = sqrt(100)

r = 10

The old radius r = 5 jumps to r = 10 so that the area quadruples.

We see that the radius has doubled. This must also mean the perimeter around the circle, aka circumference, must also have doubled.

C = 2*pi*r = 2*pi*5 = 10pi = old circumference

C = 2*pi*r = 2*pi*10 = 20pi = new circumference

This is directly because r has been doubled

-------------

Here's one way to think of why this works:

Consider a square of side lengths 3. It's area is 3*3 = 9.

If we double the sides, then we have a 6 by 6 square of area 6*6 = 36.

Note the jump from 9 to 36 is "times 4". This multiplier 4 is from each side doubling and we have 2*2 = 4.

If you were to triple each side, then the area multiplier would be 3*3 = 9

Multiplying each side by k leads to an area multiplier of k^2.

Two angles are supplementary. The measure of the larger angle is 36 more than the measure of the smaller angle. Find their measures.

the answers are 72° and 108° but I need help showing my work

Answers

x = smaller angle

x+36 = larger angle, since its 36 degrees more than the smaller angle

The two angles x and x+36 must add to 180 if they are to be supplementary (aka form a straight line)

So this means we can say the following:

(smaller)+(larger) = 180

(x) + (x+36) = 180

2x+36 = 180

2x = 180-36

2x = 144

x = 144/2

x = 72 is the smaller angle

x+36 = 72+36 = 108 is the larger angle

As a check:

smaller+larger = 72+108 = 180

which shows they are supplementary and it confirms our answers

Step-by-step explanation:

let the smaller angle be x

then the measure of larger angle will be x+36

x+x+36=180°(being supplementary angle)

2x+36=180°

2x=180°-36

2x=144°

x=144°/2

x=72°

now,

the larger angle x+36 = 72+36=108°

PLEASE HELP IN A RUSH
What is the least common multiple (LCM) of 4 and 7?

Answers

The least common multiple of 4 and 7 is 28

Answer:

The least common multiple of 4 and 7 is 28

Which sentence describes a two-column proof?
A.
The left column contains a series of definitions, and the right column states theorems.
B.
The left column contains a series of deductions, and the right column states reasons.
C.
The left column contains a series of reasons, and the right column states deductions.
D.
The left column contains a series of postulates, and the right column states definitions.

Answers

It's c I had this before

If A = 6 i -8 j and B = - 16 i + 5 j , what is the magnitude of the vector C = 2 A - B ?

Answers

Answer:

Choice a. [tex]35[/tex]

Step-by-step explanation:

Note that [tex]i=(1,0)[/tex] and [tex]j=(0,1)[/tex], so

[tex]C=2A-B=2(6i-8j)-(-16i+5j)=12i-16j+16i-5j=28i-21j=(28,-21)[/tex]

Now the magnitude of a vector [tex](x,y)[/tex] is [tex]\sqrt{x^2+y^2}[/tex], thus the magnitude of [tex]C[/tex] is

[tex]\sqrt{28^2+(-21)^2}=\sqrt{784+441}=\sqrt{1225}=35[/tex]

please help somebodydds

Answers

Answer :

RA , TR , and HP

................

please solve this question If you answer questions I will make you branilist.

Answers

Answer:

its very blury im sooooo sorry

Step-by-step explanation:

On a number line is 7/3 located between 2 and 3?

Answers

Answer: Yes it is.

Step-by-step explanation:

Mixed to proper

7/3 = 2 1/3

6x + 2
7x +4
45

can you help me find x to this answer

Answers

Answer:

x=3

Step-by-step explanation:

(6x+2 )+(7x+4) =45

13x+6=45

13x=45–6

13x= 39

x=39/13

x=3

I hope I helped you^_^

The pie chart below shows the Estrada family’s distribution of the monthly expenses for the last month. The Estrada family spent $366 on clothing last month.

What were the total expenses of the Estrada family last month?

Answers

Pie charts are used to show the relationship between data in a circle. The total expenses of the Estrada family last month are: $2287.5

Given that:

[tex]Clothing = \$366[/tex]

From the Pie chart, 13% of the total expenses were spent on clothing.

This means that

[tex]13\% \times Total = Clothing[/tex]

So, we have:

[tex]13\% \times Total = \$366[/tex]

Divide both sides by 13%

[tex]Total = \$366 \div 16\%[/tex]

[tex]Total = \$2287.5[/tex]

Hence, the total expenses are: $2287.5

Answers

Answer:

the answer is 20

Step-by-step explanation:

gtttttfftuuu

Use the graph of f(x) to explain the relationship
between the real zeros of f(x) and its intercept(s).
4

A. f(x) has one real zero at --2 because the graph of the
function has an intercept at (0.-2).
B. f(x) has two real zeros at -4 and -2 because the
graph of the function has intercepts at (-4,0) and (0,
-2).
C. f(x) has no real zeros because the graph of the
function does not pass through (0,0).
D. f(x) has one real zero at 4 because the graph of the
function has an intercept at (-4, 0).

Answers

Answer:

D.f(x) has one real zero at 4 because the graph of the function has an intercept at (-4,0).

12n - 8- 2n + 10 - 4
How to simplify?

Answers

Answer:

10n-2

Step-by-step explanation:

12n - 8- 2n + 10 - 4 = (12n-2n)+(-8+10-4)

Simplify.

10n-2

Happy learning!

--Applepi101

Answer:

10n - 2

Step-by-step explanation:

12n-8-2n+10-4

Group all the n together and the other numbers together:

12n-2n-8+10-4

10n-2

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