3 years ago

What is the measure of angle 7?

Mathematics

1 answer:

Firdavs [7]3 years ago

4 0

Answer:

The measure of angle 7 is 155*.

Step-by-step explanation:

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A sandbox is a right rectangular prism

horrorfan [7]

4.6 Is the answer I thinkkkkk

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3 years ago

For what value of a does (1/9)a+1 =81a+1 272-a?

AlexFokin [52]

Answer:

-4

Step-by-step explanation:

$\left( \dfrac{1}{9}\right)^{a+1}= 81^{a+1}\cdot 27^{2-a}\\\\\\(3^{-2})^{a+1}=(3^4)^{a+1}\cdot (3^3)^{2-a} \\\\\\3^{-2a-2}=3^{4a+4}\cdot 3^{6-3a} \\\\\\3^{-2a-2}=3^{a+10} \\\\\\-2a-2=a+10 \\\\\\-3a=12 \\\\\\a=-4$

Hope this helps!

8 0

3 years ago

Can anyone help me with these two i don’t know how to solve these plz

Inessa [10]

180-106=74
X is congruent to 2y
x=74
74/2= 37
y=37

(4z+6) is congruent to 106
106-6= 100
100/4 = 25
z=25

3 0

3 years ago

A sphere has a radius of 9 inches. A horizontal plane passes through the center of the sphere.

melisa1 [442]

Answer:

It is a circle with a radius of 9 in.

6 0

3 years ago

There are 10 boys and 20 girls in a class.

Bingel [31]

Step-by-step explanation:

There are 10 + 20 = 30 total students in the class.

Total marks for the class = 60 * 30 = 1800.

Total marks for the girls = 54 * 20 = 1080.

=> Total marks for the boys = 1800 - 1080 = 720.

Mean mark for the boys = 720 / 10 = 72.

3 0

3 years ago