All categories

2 years ago

Please help and show work if you can

Mathematics

1 answer:

laila [671]2 years ago

6 0

Answer:

25. a = 60

26. a = 17

Step-by-step explanation:

In these two problems we are going to use a property of parallelograms that says: opposite angles have equal measure

so we have

25.

$6a+10=130\\\\6a=130-10\\\\6a=120\\\\a=60$

and for 26 we have

$4a-4=2a+30\\\\4a=2a+30+4\\\\4a=2a+34\\\\4a-2a=34\\\\2a=34\\\\a=17$

You might be interested in

Find the surface area of the right prism. Round to the nearest whole number.

andriy [413]

Answer:

$\large\boxed{S.A.=96\ cm^2}$

Step-by-step explanation:

We have:

(1) two trapezoids with bases b₁ = 7cm and b₂ = 5cm and the height h = 4cm

(2) three rectangles 3 cm × 7 cm, 3 cm × 4 cm and 3 cm × 5 cm.

The formula of an area of a trapezoid:

$A=\dfrac{b_1+b_2}{2}\cdot h$

Substitute:

$A=\dfrac{7+5}{2}\cdot4=24\ cm^2$

Calculate the areas of the rectangles:

$A_1=(3)(7)=21\ cm^2\\\\A_2=(3)(4)=12\ cm^2\\\\A_3=(3)(5)=15\ cm^2$

The Surface Area:

$S.A.=(2)(24)+21+12+15=96\ cm^2$

5 0

2 years ago

Write an addition equation that is represented by the model below.

katrin2010 [14]

Answer:

Step-by-step explanation:

Okay I'm not sure but I found an article online that seemed explanatory so here ya go

6 0

3 years ago

Pleaseee helppppp !!

PilotLPTM [1.2K]

Answer:

1. -9xy

2. 6ab

3.-8mn

4. 17nx

Step-by-step explanation:

4 0

2 years ago

What is the slope of the graph of 12x + 3y = –17?

garik1379 [7]

To get the slope you need to solve for y:
12x+3y=-17
Subtract 12x from both sides:
3y=-12x-17
Divide everything by 3:
y=-4x-17/3
The slope is -4.

3 0

2 years ago

Janae drew point A located at (-2,5), and point located at (6, -1). What is the x-coordinate of point B that bisects AC?

Sphinxa [80]

Answer:

The x coordinate is 2

Step-by-step explanation:

Given

$A = (-2,5)$

$C = (6,-1)$

Required

Determine the x coordinate of B

Since B is the bisector of AC, then B is the midpoint and will be calculated using;

$B(x,y) = (\frac{x_1 + x_2}{2},\frac{y_1 + y_2}{2})$

Considering the x coordinates alone;

$x = \frac{x_1 + x_2}{2}$

Where

$(x_1,y_1) = (-2,5)$ and $(x_2,y_2) = (6,-1)$

Substitute values for x1 and x2

$x = \frac{-2 + 6}{2}$

$x = \frac{4}{2}$

$x = 2$

<em>Hence;</em>

<em>The x coordinate is 2</em>

6 0

2 years ago

Please help and show work if you can​

Please help and show work if you can