All categories

3 years ago

-x = -7 what doesthe equal and how do you do it

Mathematics

1 answer:

vampirchik [111]3 years ago

6 0

X=7
But to show your work you would put
-1x=7
Then divide -1x by -1 and 7 by -1 to cancel it out, and you get x=8

You might be interested in

Please help. I’ll mark you as brainliest if correct!

Ivan

Answer:

Step-by-step explanation:

5 0

3 years ago

The tires on Pablo's bicycle have a radius of 10 inches. Use the appropriate formula model to find the circumference. What is th

Scrat [10]

C= 2 x pi x radius
20 x pi
=62.831853.....
to the nearest 10th, this is 63. so the answer is 63 inches.

3 0

3 years ago

Can someone help me ?

Leni [432]

Answer:

Step-by-step explanation:

if she connects it to any other point angle would be more the 30 degree

6 0

3 years ago

Read 2 more answers

Here is a triangular pyramid and its net.

galben [10]

Answer:

a) Area of the base of the pyramid = $15.6\ mm^{2}$

b) Area of one lateral face = $24\ mm^{2}$

c) Lateral Surface Area = $72\ mm^{2}$

d) Total Surface Area = $87.6\ mm^{2}$

Step-by-step explanation:

We are given the following dimensions of the triangular pyramid:

Side of triangular base = 6mm

Height of triangular base = 5.2mm

Base of lateral face (triangular) = 6mm

Height of lateral face (triangular) = 8mm

a) To find Area of base of pyramid:

We know that it is a triangular pyramid and the base is a equilateral triangle. $\text{Area of triangle = } \dfrac{1}{2} \times \text{Base} \times \text{Height} ..... (1)\\$

${\Rightarrow \text{Area of pyramid's base = }\dfrac{1}{2} \times 6 \times 5.2\\\Rightarrow 15.6\ mm^{2}$

b) To find area of one lateral surface:

Base = 6mm

Height = 8mm

Using equation (1) to find the area:

$\Rightarrow \dfrac{1}{2} \times 8 \times 6\\\Rightarrow 24\ mm^{2}$

c) To find the lateral surface area:

We know that there are 3 lateral surfaces with equal height and equal base.

Hence, their areas will also be same. So,

$\text{Lateral Surface Area = }3 \times \text{ Area of one lateral surface}\\\Rightarrow 3 \times 24 = 72 mm^{2}$

d) To find total surface area:

Total Surface area of the given triangular pyramid will be equal to <em>Lateral Surface Area + Area of base</em>

$\Rightarrow 72 + 15.6 \\\Rightarrow 87.6\ mm^{2}$

Hence,

a) Area of the base of the pyramid = $15.6\ mm^{2}$

b) Area of one lateral face = $24\ mm^{2}$

c) Lateral Surface Area = $72\ mm^{2}$

d) Total Surface Area = $87.6\ mm^{2}$

8 0

3 years ago

Help me please please

Mariana [72]

Answer:

scale factor P to Q: 4/5 scale factor Q to P: 5/4

Step-by-step explanation:

Divide original length over new length and you'll get the scale factor.

5 0

3 years ago

-x = -7 what doesthe equal and how do you do it ​

-x = -7 what doesthe equal and how do you do it