Perform the operation.
(3x2 – 7x) – (4x2 + 6x)

Answer:

Step-by-step explanation:t55

An octagon has 8 sides. If each of them has a length of x, then the perimeter is 8x which is twice the perimeter of the square. (The square has a perimeter of 4x)

A dodecagon is a 12 sided regular polygon. It will have 12 sides all of which are equal to x. Since the square has a perimeter of 4x and the dodecagon has a perimeter of 12x the perimeter of the dodecagon is 3 times that of the given square.

Answer:

the slope is 5/4

Step-by-step explanation:

i just did this in math class

insert the equation y=mx+b

m is the slope

Answer:

Slope is 5/4

Step-by-step explanation:

General equation of a line:

[tex]y = mx + c[/tex]

m » slope

by comparison with;

[tex]y = \frac{5}{4} x - \frac{7}{4} [/tex]

[tex]{ \sf{slope \: is \: \frac{5}{4} }}[/tex]

Answer:

[tex]\frac{5}{6}[/tex]

Step-by-step explanation:

3 [tex]\frac{1}{2}[/tex] - 2 [tex]\frac{2}{3}[/tex]

[tex]\frac{7}{2}[/tex] - [tex]\frac{8}{3}[/tex] First change the two mixed numbers to improper fractions. Multiply the whole number by the denominator then add the numerator to the answer.

[tex]\frac{21- 16}{6}[/tex] Bring the fractions to the same denominator by finding the lowest common multiple of both denominators

Then the answer becomes [tex]\frac{5}{6}[/tex].

HOPE THIS HELPED

Answer:

The shirt is $31.50 and the pants are $46.50

Step-by-step explanation:

Let x represent the cost of the pants.

If the shirt is 15 dollars less than the pants, its cost can be represented by x - 15.

Create an equation, and solve for x:

(x) + (x - 15) = 78

2x - 15 = 78

2x = 93

x = 46.5

So, the pants are $46.50.

Subtract 15 from this to find the cost of the shirt:

46.50 - 15

= 31.50

The shirt is $31.50 and the pants are $46.50

Answer:

[tex]5\sqrt{5}[/tex]

Step-by-step explanation:

See attached image.

The vectors u and v are orthogonal, so the angle between them measures [tex]90^\circ[/tex]. [tex]||u||=5[/tex] and [tex]||u||=\frac{1}{2}||v|| \Rightarrow ||v||=10[/tex]

The vector sum is the diagonal shown in the image and its length/magnitude/norm can be found by using the Pythagorean Theorem.

[tex]||u+v||=\sqrt{5^2+10^2}=\sqrt{125}=5\sqrt{5}[/tex]

Answer:

Step-by-step explanation:

[tex]|| \overrightarrow {u}||=5\\\\|| \overrightarrow {u}||=\dfrac{|| \overrightarrow {v}||}{2} \Longrightarrow\ || \overrightarrow {v}||=2*|| \overrightarrow {v}|=10\\\\|| \overrightarrow {u}+\overrightarrow {v}||^2=|| \overrightarrow {u}||^2+|| \overrightarrow {v}||^2+0\ (since\ u\ and\ v\ are\ orthogonal\ vectors \ )\\\\=5^2+10^2=125\\\\|| \overrightarrow {u}+\overrightarrow {v}||=5*\sqrt{5} \\[/tex]

Answer:

C, F

Step-by-step explanation:

Answer:

if the question is what is f(x) -1 ( f(x) )

then the answer is;

=10x-5 -1[10(3)-5]

=10x-5 -1(30-5)

=10x-5-1(25)

=10x-5-25

=10x-30

Answer:

Step-by-step explanation:

When the numerator is more than the denominator the fraction is more (> 1) than one.

If the numerator is less than the denominator the fraction is less ( < 1 ) than one.

1/2 : 53/100 = 100/106 (< 1)

1/2 : 13/22 = 22/26 ( < 1 )

1/2 : 24/50 = 50/48 ( > 1 )

1/2 : 47/100 = 100/94 ( > 1 )

Answer:

A.  y=3x

Step-by-step explanation:

Work Shown:

30% of 45 = 0.30*45 = 13.50

You save $13.50 and the sale price is 45 - 13.50 = 31.50 dollars

An alternative is to compute

0.70*45 = 31.50

This works because if you save 30%, then you have to pay the remaining 70%

Answer:

[tex]{ \underline{ \sf{it \: is \: - 6 \frac{33}{40} }}}[/tex]

Step-by-step explanation:

[tex]2 \frac{5}{8} \times ( - 2 \frac{3}{5} ) \\ \\ = \frac{21}{8} \times - \frac{13}{5} \\ \\ = - \frac{273}{40} \\ \\ = - 6 \frac{33}{40} [/tex]

Answer:

4

Step-by-step explanation:

A term is a constant or variable or product of constant and variables

3x²    ----> term 1

-2y  ------> term 2

+8x  ------->  term 3

-16   -------> term 4

Hi :)

10, 100 Afghani Afghani (currency name) is $1212 USD with the conversion you provided. Today it's like $117.41.

Answer:

112.29 usd

Step-by-step explanation:

1 dollar afgani is 0.011 dollars usd :)

If u like answer please consider hitting the heart and give 5 stars :)

Answer:

Let’s just hail a taxi.

Step-by-step explanation:

Answer:

0.023682692307692

Step-by-step explanation:

Above one is correct

Answer:

none of those answers are right the answer is 0.0236826923

Step-by-step explanation:

Answer:

(5,8) (6,7) (7,6)

Step-by-step explanation:

those three points make a line that has a negative slope. if m<0 then m<1

Answer:

You would shade the fourth quadrant (bottom right).

Step-by-step explanation:

Due to the domain and range sets, you're given the facts that x must be greater than or equal to 0, but y is less than or equal to zero. This gives you what quadrant the graph should be in. Since you're not given an equation to follow like y=ax+b, then I can not say that this will give you a line.

Answer:

128 grains.

I think so..

Step-by-step explanation:

SEE the image for solution.

HOPE it helps

Have a great day

Answer:

Step-by-step explanation:

[tex]u_1=1=2^0\\u_2=2=2^1\\u_3=4=2^2\\u_4=8=2^3\\\\...\\u_{64}=2^{63}\\\\we\ must\ calculate\\\\u_1+u_2+u_3+u_4+...+u_{64}\\\\=1+2^1+2^2+2^3+2^4+....+2^{63}\\\\=\dfrac{2^{64}-1}{2-1} \\\\=2^{64}-1\\\\=18446744073709551615\\\\=1.8446744073709551615*10^{19}[/tex]

Answer:

first D and second B.

Step-by-step explanation:

first D and second B.

Answer:

Use the diagram.

1.

angle1 and angle2 are adjacent angles.

Correct answer A. true

Incorrect answer B. false

2.

angle3 and angle4 are complementary.

Incorrect answer A. true

Correct answer B. false

3.

angle2 and angle3 are ______ angles.

Incorrect answer A. complementary

Incorrect answer B. vertical

Incorrect answer C. right

Correct answer D. supplementary

4.

angle2 and angle4 are ____ angles.

Incorrect answer A. complementary

Correct answer B. vertical

Incorrect answer C. right

Incorrect answer D. supplementary

5.

Find mangleABC if the line modifying above upper B upper D with two-way arrow bisects angleABC and given mangleABD = 5x and mangleDBC = 3x + 10.

Incorrect answer A. 5°

Incorrect answer B. 25°

Incorrect answer C. 30°

Correct answer D. 50°

Step-by-step explanation:

100% correct my friends

good luck out there

; )

Answer:

114°

Step-by-step explanation:

(x+95)°=6x°[being vertically opposite angles]

or, 95=6x-x

or, 95= 5x

or, 95/5 = x

or, 19 = x

Then,

(x+95)°

= 19+95°

= 114°

Answer:

114 Degrees

Step-by-step explanation:

x=19

You do this by setting (x+95)=6x and then solving for x.

If you need further explanation let me know!

Answer: 7/80

Step-by-step explanation: because you would have to multiply the values of a and b, 7 times 1=7 and 8 times 10=80, so an= 7/80

Answer:

A

Step-by-step explanation:

x=13

so, A.T.Q

13-5+7=15

13+2=15

15=15

Answer:

I don't know of it should be more complicated than that

Answer:

30

Step-by-step explanation:

Another way to group the factor would be 3(2×5)

2 times 5 is 10 and then 10 times 3 is 30 so therefore, your answer is 30

Answer:

Ithink the answer is 6 hope it helps please mark as brainliest

Answer:

a^2+3a+2

Step-by-step explanation:

(a + 1) × (a + 2)  

a x a =  a^2

a x 2 = 2a

1 x a = 1a

1 x 2 = 2

a^2 +2a+1a+2

    2a+1a =3a

a^2+3a+2

Answer:

QR=12

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

Step-by-step explanation:

pls mark me the brainliest pls

Step-by-step explanation:

15 is between 9 and 16 which are two perfect squares

[tex]9 < 15 < 16[/tex]

[tex] \sqrt{9} < \sqrt{15} < \sqrt{16} [/tex]

[tex]3 < \sqrt{15} < 4[/tex]

Answer:

Step-by-step explanation:

The value of the angle x is 85°

The sum of angles of a quadrilateral = 360°

This means that given a quadrilateral with angles, A, B, C, D ;

(A + B + C + D) = 360°

Given the angles of a quadrilateral : (x°, 150°, 77°, 48°)

The value of x will be obtained thus :

(x + 150 + 77 + 48) = 360

150 + 77 + 48 + x = 360

275 + x = 360

x = 360 - 275

x = 85°

Hence, the value of x is 85°

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