Answer:
1: x + 2
2: -6x + 2
3: -2x - 10
is a=3 b=4 c=2 and d=-2 find the value of 3b²c-2ad
And ac-bd/7
Step-by-step explanation:
remember : calculations are usually done from left to right, but multiplications and divisions come before + and -.
and exponents come before multiplications and divisions.
and minus a negative number always turns into plus a positive number.
so,
3b²c - 2ad = 3×4²×2 - 2×3×-2 = 96 - -12 = 96 + 12 = 108
and
ac - bd/7 = 3×2 - 4×-2/7 = 6 - -8/7 = 6 + 8/7 = 7 1/7 ≈ 7.143
(4+16)⋅8−2 please help
Answer:
158
Step-by-step explanation:
4+16 = 20
20×8-2= 158
the dot means multiply and u must first find the answer in the bracket
if there is no bracker, then u must start with multiply first
Step-by-step explanation:
4+ 16 is equal to 20
8-2 is equal to 6
20×6 is equal to 120
120 is ans
Which transformation can you use to show that these shapes are congruent?
Answer:
Rotations, reflections, and translations are isometric. That means that these transformations do not change the size of the figure. If the size and shape of the figure is not changed, then the figures are congruent.
Please helpppppppppppp
Answer:
B. -9/11
Step-by-step explanation:
(f/g)(-4) = f(-4) / g(-4)
To find f(-4), we plug in -4 everywhere there is an x
f(-4) = 2(-4) - 1 = -8 - 1 = -9
Same idea for g(-4):
4(-4)^2 + 14(-4) + 3
4*16 - 56 + 3 = 11
So (f/g)(-4) = f(-4) / g(-4) =
-9/11
(
Solve this equation for p:
P+1 / 2 = 3p+7/5
Answer:
p = -10
Step-by-step explanation:
[tex]\frac{p+1}{2} = \frac{3p+7}{5}[/tex] cross multiply fractions
6p + 14 = 5p + 5
6p - 5p = 5 - 15 subtract like terms
p = - 10
Find the total surface area of a hemisphere of radius 7 cm. (Take /pi a to be 3.142.)
will mark brainliest
i dont understand this please help!!!!! i will give brainliest
Answer: add 16 and 50
Step-by-step explanation: it’s asking for the entire length
please help me is for my homework
Answer:
126/100
Step-by-step explanation:
126% / 100
= 1.26
Answer:
1.26
Step-by-step explanation:
divide 126 by 100 first
[tex]\frac{126}{100}[/tex]
you will get
1.26
select the correct answer
which function represents the inverse of function f below
Answer: D
Step-by-step explanation:
Using the Factor Theorem, which of the polynomial functions has the zeros 4, [tex]\sqrt7[/tex], and [tex]-\sqrt{7\\}[/tex]?
f (x) = x3 – 4x2 + 7x + 28
f (x) = x3 – 4x2 – 7x + 28
f (x) = x3 + 4x2 – 7x + 28
f (x) = x3 + 4x2 – 7x – 28
Answer:
B
Step-by-step explanation:
According to the Factor Theorem, if (x - a) is a factor (where a is a zero) of the polynomial P(x), then P(a) must equal zero.
Our zeros are 4, √7, and - √7. Hence, when evaluating P(4), P(√7), and P(-√7), all must evaluate to zero.
Testing each choice, we can see that only choice B is true. That is:
[tex]\displaystyle \displaystyle \begin{aligned} f(4)&= (4)^3 - 4(4)^2 - 7(4) + 28 \\ &= (64) - (64) - (28) + 28 \\ &= 0 \stackrel{\checkmark}{=}0 \\f(\sqrt{7}) &= (\sqrt{7})^3 - 4(\sqrt{7})^2 - 7(\sqrt{7}) + 28 \\ &= (7\sqrt{7}) - (28) - (7\sqrt{7}) + 28 \\ &= 0 \stackrel{\checkmark}{=} 0\\ f(-\sqrt{7}) &= (-\sqrt{7})^3 - 4(-\sqrt{7})^2 - 7(-\sqrt{7}) + 28 \\ &= (-7\sqrt{7}) - (28) + (7\sqrt{7}) + 28 \\ &= 0 \stackrel{\checkmark}{=} 0 \end{aligned}[/tex]
In conclusion, our answer is B.
122x193-12 then turn it into a fraction then divide whats my answer please help me! :)
Answer:
235.34
Step-by-step explanation:
122×193-12 = 23534
23534/100
23534/100 = 235.34
The sum of 6 and x. What is the algebraic expression?
Answer:
6+x
Step-by-step explanation:
sum means add
6+x
Hey there!
When you see/hear the word “sum” in mathematics.. it usually means “to add”.
So, we are adding 6 from the unknown number (the x-value)
Answer: 6 + x
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Mary lives 1 3/4 miles from school. She rode her bycycle to school and back for 5 days. Which expression shows how to estimate the number of miles she rode?
The expression which represents the number of miles Mary rode in 5 days is 5*(2 + 2).
What is mixed fraction?A fraction represented with its quotient and remainder is a mixed fraction.
What is expression?An expression is a number, a variable, or a combination of numbers and variables and operation symbols.
According to the given question.
Distance between Mary's house and school = [tex]1\frac{3}{4} =\frac{7}{4}[/tex]
Number of days Mary rode her bicycle to school and back = 5
⇒ Distance travelled by Mary in one day = [tex]2(\frac{7}{4} )=\frac{7}{2}[/tex]
Therefore, the expression which represents the number of miles she rode in 5 days = [tex]5(\frac{7}{2} )=\frac{35}{2}=17.5 miles[/tex] ≈ 20 miles
Hence, the expression which represents the number of miles Mary rode in 5 days is [tex]5[/tex] *(2+2).
Find out more information about expression and mixed fraction here:
https://brainly.com/question/17724027
#SPJ3
What does x equal?
2x + 5x – 4= 17
Answer:
x = 3
Step-by-step explanation:
2x + 5x - 4 = 17 (Given)
7x - 4 = 17 (Simplify)
7x - 4 + 4 = 17 + 4 (Add 4 on both sides)
7x = 21 (Simplify)
7x/7 = 21/7 (Divide 7 on both sides)
x = 3 (Simplify)
find the value of y,if (-4+y)=-7
step by step
Answer:
(-4+y)=-7
-4+y=-7
by adding 4 on both sides, we get
-4+4+y=-7+4
y=-3
-7x(-2) it's multiply and divide integers
Answer:
14
step by step explanation
-7×(-2)
14
Please help me find the midpoint
[tex]\\ \rm\hookrightarrow (x,y)=\left(\dfrac{x_1+x_2}{2}_\dfrac{y_1+y_2}{2}\right)[/tex]
[tex]\\ \rm\hookrightarrow (x,y)=\left(\dfrac{6+9}{2},\dfrac{2+4}{2}\right)[/tex]
[tex]\\ \rm\hookrightarrow (x,y)=\left(\dfrac{15}{2},\dfrac{6}{2}\right)[/tex]
[tex]\\ \rm\hookrightarrow (x,y)=(7.5,3)[/tex]
The perimeter (adding up all the sides) of a rectangular
piece of land is 42 meters. The length of the land can
be shown by (x + 4) and its width can be shown by
(2x – 7).
Solve for x, and then plug it back in to find the Length
and the Width of the land.
-7)
Answer:
x = 8
length is 12 meters
width is 9 meters
Step-by-step explanation:
P = 2l + 2w
where l is the length and w is the width.
(There are two sides with the same length, and two sides with the same width.)
Let l = x + 4 and w = 2x - 7
so 2(x+4) + 2(2x-7) = 42
Distribute the 2s
2x + 8 + 4x - 14 = 42
Combine like terms
2x + 4x + 8 - 14 = 42
Group
6x - 6 = 42
Add 6 to both sides
6x = 48
Divide 6 on both sides
x = 8
Plug back in
l = 8 + 4 = 12 meters
and w = 2(8) - 7 = 16 - 7 = 9 meters
Double-check: 2 * 12 + 2 * 9 = 24 + 18 = 42
-6, 20, 4.3, 159/-9
Order from least to greatest
Someone help me with this please
MACARONI AND AN POT THATS AN WAAAAAPP
2m + 3m2 - 4m
What is if if I simplify each expression by combining like terms
Answer:
= 3m2 + 2m - 4m
= 3m2 - 2m
Step-by-step explanation:
you can only subtract similar products
Which of the following numbers is irrational?
1.45
V81
V 32
3
7
Answer:
3
Step-by-step explanation:
hope it helps have a great day
Solve and show how pls
Answer:
16
Step-by-step explanation:
since -4 is being squared, we can write it out as -4 * -4, to get us the answer 16. this answer is positive because a negative times a negative will cancel out and = a positive.
from the above given figure, DE parallel to BC. if AD = 3cm, DB = 4cm and BC = 14cm, find DE
DE \\ BC
So ;
[tex] \frac{AD}{AB} = \frac{DE}{BC} [/tex]
AD = 3cm , BC = 14cm , DB = 4cm
AB = AD + DB
AB = 3 + 4 = 7 cm
[tex] \frac{AD}{AB} = \frac{DE}{BC} \\ \frac{3}{7} = \frac{DE}{14} \\ DE = \frac{14 \times 3}{7} = \frac{42}{7} = 6[/tex]
So ; DE= 6 cmI hope I helped you^_^
Janelle is shopping around for the best cell phone plan. The best company is offering a $50 set up fee plus $60 per month. If the contract is for one year, how much will Janelle end up paying after one year?
$650
None of these choices are correct.
$770
$700
$720
Answer:
770
Step-by-step explanation:
12 month ×60 per month
Plus 50 set up fee
=770
What is the value of a in the equation 3a+b = 54, when b = 9?
O 15
O 18
18 k
O 21
O 27
Answer:
15
Step-by-step explanation:
Six times a number increased by five is fifty-three. What is the number?
Answer:
8
Step-by-step explanation:
6x+5=53
6x=48
6x/6=48/6
x=8
The sum of 5 consecutive integers is 110 what is the 4th number of this sequence
Step-by-step explanation:
Let 5 consecutive no. be
n, n+1,n+2,n+3,n+4
n+n+1+n+2+n+3+n+4=110
5n+10=110
5n=110-10
5n=100
n=100/5
n=20
4th term is n+3=20+3=23
Thank You
30. TRAVEL Before starting her vacation, Sari's car had 23,500 miles on the
odometer. She drives an average of m miles each day for two weeks. Write
an expression that represents the mileage on Sari's odometer after her trip.
Answer:
(23,500 +14m) miles
Step-by-step explanation:
the mileage on Sari's odometer after her trip =
(23,500 + 14 m) miles
Vicky earned 29.75 for working 3 1/2 hours. What was her hourly wage ?
Answer:
8. 5
Step-by-step explanation:
First of all, I converted 3 hours 30 minutes to min. And we have 60 mins in an hour.
Therefore 60 × 3= 180mins +30 mins = 210 mins
So,
If 210=29.75
60=?
Cross multiply
29.75×60/210
=8.5
She's earns 8.5 in an hour