3 years ago

What’s the answer to this

Mathematics

2 answers:

lidiya [134]3 years ago

7 0

Answer:

Step-by-step explanation:

I solved in the picture

Hope this helps ^-^

madam [21]3 years ago

4 0

B is the correct answer I think

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Solve: 8x2 + 3x = -7

Agata [3.3K]

Answer: PEMDAS

8•2 = 16

16+3x = -7

-3 -3

16 + x = -10

-16 -16

X= -26

Step-by-step explanation:

3 0

3 years ago

benjamin is 4 years younger the kevan william is 4 years less than twice benjamins age if willian is 22 how old are kevan and be

meriva

Kevin would be 14 and Benjamin would be 10

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2 years ago

A bag contains 4 red marbles,

GuDViN [60]

Step-by-step explanation:

4+6+5=15

15-1=14

2/14

1/7

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3 years ago

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How tall is a building that casts a 78-ft shadow when the angle of elevation of the sun is 30 degrees?

Marta_Voda [28]

Answer: $45.03\ ft$

Step-by-step explanation:

Given

The length of the shadow is 78 ft

the angle of elevation is $\theta =30^{\circ}$

Suppose the height of the building is $h$

From the figure, we can write

$\tan 30^{\circ}=\dfrac{h}{78}\\\\h=78\tan 30^{\circ}\\\\h=45.03\ ft$

The height of the building is 45.03 ft

8 0

2 years ago

A circle has a radius of 7 inches what is the area

Scrat [10]

Answer:

49π and 153.86 when multiplyed by 3.14.

Step-by-step explanation:

Hi!

The formula for finding the area of a circle is πr².

In that case, all we have to do is substitute 7 inches for our r.

7² × π

= 49π

If you want that solved out, we can substitute a rational number for π (3.14)

49 × 3.14 = 153.86

Thus, the area of the circle is $\boxed{49\pi}$ , 153.86 roughly.

Hope this helps!

8 0

3 years ago