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3 years ago

What to do on 9 and 10

Mathematics

1 answer:

Vanyuwa [196]3 years ago

3 0

For number nine you divide 7 into 31 and for the second option read for the AWNSER in the comments

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3/4•3/4???? I can’t do it in my head and I don’t know how to make a decimal into a fraction

Monica [59]

Answer:

0.5625

Step-by-step explanation:

3/4 as a decimal is 0.75

0.75×0.75=0.5625

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3 years ago

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A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is

Julli [10]

Answer:

The maximum safe rescue height is 104.6 feet above the height of the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and AB be the building and Ladder making an angle of 72° as shown.

We have to find the height of the building.

Let x be the height of building

Using Trigonometric ratio,

$\sin C=\frac{\text{Perpendicular}}{\text{Hypotenuse}}$

$\sin 72^{\circ}=\frac{AB}{BC}$

$\sin 72^{\circ}=\frac{x}{110}$

$x=110 \times \sin 72^{\circ}$

$x=104.6$

So, the maximum safe rescue height is 104.6 feet above the height of

the ground.

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3 years ago

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Helena had a balance of $14.48 left on a gift card. She bought a muffin each for her, and five of her friends. The cost of each

Ivenika [448]

She spent $6.12 on the muffins for her and her friends, and she has $8.36 left on her gift card. By multiplying 6 by $1.02, you get the amount she spent, and by subtracting $14.48 by $6.12, I find how much she has left on her gift card.

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2 years ago

Determine if they are congruent. State how they are.

Doss [256]

$\huge \bf༆ Answer ༄$

The Correct choice is ~ D

$\textsf{Not enough information }$

The given triangles are not congruent, because they they just have all their corresponding angles equal to one another, so we need more information ~

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2 years ago

The table shows the heights of students in a group.

Serjik [45]

Answer:

A 47 inches

Step-by-step explanation:

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2 years ago