7th grade math help pleasee

Answer:

6.19

7a.C

7b.Angle AED

7c.Angle 8

7d. Angle 6 and 8

Step-by-step explanation:

6a. The labeled angles are vertical angles so we set them equal to each other.

[tex]7x - 8 = 6x + 11[/tex]

[tex]7x = 6x + 19[/tex]

[tex]x = 19[/tex]

7a.Angle 11 is near Point C so Point C is the vertex.

7b. Angle 5 vertex is E so we can use any 3 points as an angle as long as E is in the middle example, and the angles are on the left side so we can use

[tex]aed[/tex]

Write the angle sign as well.

7c. Angle 6 is vertical from Angle 8.

7d. Angle 7 and 6 form a linear pair and since Angle 6=Angle 8, Angle 7 and 8 form a linear pair as well.

Answer:

A

Step-by-step explanation:

Because the x-coordinate is in seconds. Which eliminates answer B

Also, the Y-coordinate is measured in 40 meters per unit, this eliminates C and D.

Answer:

Supplementary

Step-by-step explanation:

Two angles are "supplementary" when their degree values add up to 180.

Another similar word is "complementary" where angles add up to 90.

;) tip: memorize the words

Step-by-step explanation:

speed= distance/time

37 mn=2220 sec

3 km=3000 m

ans=3000m/2220sec

Answer:

7

Step-by-step explanation:

This is because any number combind with a variable will be considered a coefficient, for example in the equation 4x-13, 4 is the coefficient.

Answer:

45

Step-by-step explanation:

just cuz

Answer:

45

Step-by-step explanation:

Answer: 4,84,920

Step-by-step explanation:

Given

The rent per month is 1347

for a year it is 12 months

for 30 years it is [tex]30\times 12=360\ \text{months}[/tex]

Rent for 30 years it is

[tex]\Rightarrow \text{rent}=1347\times 360=484,920[/tex]

Answer: 4 is the scaling increment

Step-by-step explanation:

12/3 = 4

8/2 = 4

Answer:

x = 62.9° (3 sig. fig.)

Step-by-step explanation:

Simply by using the cos law,

cosx = (1.3² + 2.1² - 1.9²)/2(1.3)(2.1)

x = 62.9° (3 sig. fig.)

Answer:

24¾

Step-by-step explanation:

8/18=11/x

x=11×18/8

x=198/8

x=24¾

(18/2)+6/6+3

Step-by-step explanation:

(18/2)=9

6/6=1

9+1=10

10+3=13

Use PEMDAS

Answer:

y = 1/3(x + 5)^2 - 4

Step-by-step explanation:

The general vertex form is;

y = a(x-h)^2 + k

From the question, (h,k) are the coordinates of the vertex which is (-5,-4)

So we have

y = a(x + 5)^2 -4

So we need to get the leading coefficient

Simply substitute the point it passes through

x = -2 and y = -1

-1 = a(-2 + 5)^2 - 4

-1 = a(3)^2 -4

-1 = 9a -4

9a = 4-1

9a = 3

a = 3/9

a = 1/3

So the equation is;

y = 1/3(x + 5)^2 - 4

Answer:

Answer is 13 I hope this help you

Answer:

A

Step-by-step explanation:

The measure of the angles of a triangle = 180

70 + 80 + 45

150 + 45

195 degrees

195 > 180

So, A) No

Answer:

275

Step-by-step explanation:

Answer:

I can't see the picture but the domain is the x value.

Step-by-step explanation:

Answer:

88

Step-by-step explanation:

[tex] \frac{86 + 94 + 88 + 95 + 89 + x}{6} = 90[/tex]

The mean would be the sum of all the math quiz grades divided by the number of quizzes taken.

Solve for x:

[tex]86 + 94 + 88 + 95 + 89 + x = 540[/tex]

[tex]452 + x = 540[/tex]

[tex]x = 88[/tex]

Thus, Allen needs at least an 88 to obtain a mean of at least 90.

Answer:

the answer is c

Answer:

[tex]\frac{x-1}{x+2}[/tex]

Step-by-step explanation:

simplifying the equation:  [tex]x^2-3x+2/x^2-1[/tex]

1) Rewrite the equation so it's easier to understand:

[tex]\frac{x^2-3x+2}{x^2-4}[/tex]

2) factor [tex]x^2-3x+2[/tex]:

[tex]x^2-3x+2[/tex] [tex]=> (x-1)(x-2)[/tex]

3) factor [tex]x^2-4[/tex]:

[tex]x^2-4 => (x+2)(x-2)[/tex]

Meaning: [tex]\frac{(x-1)(x-2)}{(x+2)(x-2)}[/tex]

4) Cancel the common factor: [tex](x-2)[/tex] from the numerator and the denominator:

[tex]=\frac{x-1}{x+2}[/tex]

Answer:

1/ 2

Step-by-step explanation:

Given that :

Fraction left over = 3/8

Fraction of leftover ate = 3/4

Amount of the whole cake Norma have at lunch :

Fraction left over ÷ fraction of left over ate

3/8 ÷ 3/4

3/8 * 4/3

(3*4) / (8*3)

12 / 24

1/2

1/2 of the whole cake

Answer:

1/2!!

Step-by-step explanation:

Answer:

45 3/10 mph

Step-by-step explanation:

30 1/5 /2 = 15 1/10

15 1/10 x 3 = 45 3/10 mph

Answer:

a = [tex]\frac{12}{\sqrt{3} }[/tex]

Step-by-step explanation:

Using the tangent ratio in the right triangle and the exact value

tan30° = [tex]\frac{1}{\sqrt{3} }[/tex] , then

tan30° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{a}{12}[/tex] = [tex]\frac{1}{\sqrt{3} }[/tex] ( cross- multiply )

a × [tex]\sqrt{3}[/tex] = 12 ( divide both sides by [tex]\sqrt{3}[/tex] )

a = [tex]\frac{12}{\sqrt{3} }[/tex]

Answer:

6/5

Step-by-step explanation:

2/5*3=2/5*3/1=6/5

Answer:

[tex]\frac{6}{5}[/tex] or [tex]1\frac{1}{5}[/tex]

Step-by-step explanation:

[tex]\frac{2}{5} *3[/tex]

3 can be rewritten as 3/1

[tex]=\frac{2}{5}*\frac{3}{1}[/tex]

Multiply the numerators and denominators

[tex]2*3=6\\5*1=5[/tex]

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

You can also change this into a mixed number by dividing the numerator by the denominator and writing the remainder as the numerator:

[tex]= 1\frac{1}{5}[/tex]

I hope this helps!

Answer:

-3q+3t

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

20/2 = 10

Answer:

mean: 6.9

median: 7

range: 2

Step-by-step explanation: