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2 years ago

13. The lengths of two adjacent sides of a parallelogram are 7 cm and 5 cm respectively.

Mathematics

1 answer:

SashulF [63]2 years ago

7 0

Answer:

perimeter of the required parallelogram = 24 cm

Step-by-step explanation:

perimeter of parallelogram = 2( l + b ) = 2 ( 7 + 5 )

= 2 × (12)

= 24 cm

i hope it helped

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The ratio of boys to girls in a class is 7:9

lesya [120]

Answer:

7/16

9/16

Step-by-step explanation:

boys =7+9 total ratio =16

ratio of boys=7/16

ratio of girls=9/16

8 0

3 years ago

Erin solved the problem. 1,000-479=521 Which equation did Erin use ro check his answer?

dimaraw [331]

Hi there!

equation:521+479=1000..

<em><u>If your subtract 479 from 1,000, in addition form it should be the opposite..</u></em>

we also know that adding’s oppsite is subtracting and multiplyin’s opposite is dividing..

Therefore, the equation Erin used to check his answer would be 521+479=1,000..

6 0

3 years ago

Help me part a and B

Mashutka [201]

Given:

Funnel is in the shape of a cone.

Radius = 4 inches

Height = 10 inches

To find:

a) The volume of the funnel

b) How many quarts of oil are in the funnel.

Solution:

Volume of cone:

$$V=\frac{1}{3}\pi r^2 h$

$$V=\frac{1}{3}\times 3.14 \times 4^2 \times 10$

$$V=167.47$ in³

The volume of the funnel is 167.47 in³.

1 qt ≈ 58 in³

To convert cubic inch to quarts divide by 58.

$$167.47in^3=\frac{167.47}{58}$

= 2.9 quarts

Therefore 2.9 quarts of oil are in the funnel.

7 0

3 years ago

Write an equation of the line that passes through each point with the given slope, (3,5) and m=2.

icang [17]

Answer:

The point slope formula states (y-y1)=m(x-x1)

Where m is the slope and (x1 y1) is a point the line passes through

Substituting the point and slope from the problem give

(y-5)=-2(x-3) ~answer

6 0

3 years ago

Ian tosses a bone up in the air for his dog, Spot. The height, h, in feet, that Spot is above the ground at the time t seconds a

kirill115 [55]

Answer:

12 feet per second.

Step-by-step explanation:

Please consider the complete question.

Ian tosses a bone up in the air for his dog, Spot. The height, h, in feet, that Spot is above the ground at the time t seconds after she jumps for the bone can be represented $h(t)=-16t^2+20t$ .

What is Spot's average rate of ascent, in feet per second, from the time she jumps into the air to the time she catches the bone at t=1/2?

We will use average rate of change formula to solve our given problem.

$\text{Average rate of change}=\frac{f(b)-f(a)}{b-a}$

$\text{Average rate of change}=\frac{h(\frac{1}{2})-h(0)}{\frac{1}{2}-0}$

$\text{Average rate of change}=\frac{-16\cdot(\frac{1}{2})^2+20\cdot \frac{1}{2}-(-16\cdot(0)^2+20\cdot (0))}{\frac{1}{2}-0}$

$\text{Average rate of change}=\frac{-16\cdot\frac{1}{4}+10-(0)}{\frac{1}{2}}$

$\text{Average rate of change}=\frac{-4+10}{\frac{1}{2}}$

$\text{Average rate of change}=\frac{6}{\frac{1}{2}}$

$\text{Average rate of change}=\frac{2\cdot 6}{1}$

$\text{Average rate of change}=12$

Therefore, Spot's average rate of ascent is 12 feet per second.

3 0

3 years ago