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3 years ago

If -3x–7 =23 then 6x=?

Mathematics

1 answer:

vovangra [49]3 years ago

8 0

Answer:

6x = -60

Step-by-step explanation:

-3x - 7 = 23

-3x = 30

x = -10

6(-10) = -60

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What is the area of the figure? 40 ft2 84 ft2 96 ft2 can't be determined

mina [271]

Answer:

$A=80\ ft^2$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of an isosceles triangle (has two equal sides) plus the area of a rectangle

step 1

Find the area of the triangle

The area of the triangle is equal to

$A=\frac{1}{2}bh$

we have

$b=16\ ft$

To find out the height of the triangle Apply the Pythagorean Theorem

$10^2=(16/2)^2+h^2$

solve for h

$100=64+h^2$

$h^2=100-64$

$h^2=36$

$h=6\ ft$

Find the area of triangle

$A=\frac{1}{2}(16)(6)$

$A=48\ ft^2$

step 2

Find the area of rectangle

The area of rectangle is equal to

$A=LW$

we have

$L=16\ ft\\W=2\ ft$

substitute

$A=(16)(2)=32\ ft^2$

step 3

Find the area of the figure

Adds the areas

$A=48+32=80\ ft^2$

5 0

3 years ago

First right answer will get brainlist

creativ13 [48]

$m- \frac{3}{4}=7 \frac{1}{8} \\ \\ m= \frac{57}{8}+ \frac{3}{4}= \frac{57+6}{8}= \frac{63}{8}= 7 \frac{7}{8}$

7 0

3 years ago

Anyone who can do math if you can do this one problem that would be cool

nlexa [21]

Answer:

x = 11; z = 16

Step-by-step explanation:

9x- 35 = 5x+ 9

4x- 35 = 9

4x = 44

x = 11

180 - 64

6 0

2 years ago

I need help, my teacher didnt teach up this

nlexa [21]

Answer:

The volume is 1539.38

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What is the sum of the interior angles in the polygon below?

elena-s [515]

Answer:

720

Step-by-step explanation:

Since there are six coordinates, the polygon must be a hexagon.

Sum of angles in a polygon= (n-2)×180

= (6-2) × 180

= 720

3 0

3 years ago