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3 years ago

Please help # 36,38 and 39 ASAP.Thanks:)

Mathematics

1 answer:

Rzqust [24]3 years ago

4 0

36 is B
37 is H
Do not quote me on this, but I think the first inequality x= any number over 15
And the second one is r=4

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How to solve y=7/10x+4/5

valkas [14]

To write a linear equation in standard form, move each variable term to the left side of the equation and simplify.

Ax+By=C

Since x is on the right side of the equation, switch the sides so it is on the left side of the equation.

710x+10=y

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3 years ago

A radio tower has a 64 ft Shadow cast by the sun. If the angle from the tip of the shadow to the top of the tower is 78.5°. what

Softa [21]

Step-by-step explanation:

right-angled triangle, and law of sine (for any type of triangles) :

a/sin(A) = b/sin(B) = c/sin(C)

where the sides and the correlated angles are always opposite from each other.

and we know that the sum of all angles in a triangle is always 180°.

so, the angle at the foot of the radio tower is 90°.

the angle from the top of the shadow to the top of the tower is 78.5°.

so, the third angle (at the top of the tower) is

180 - 90 - 78.5 = 11.5°

and with the law of sine we get

height/sin(78.5) = 64/sin(11.5)

height = 64×sin(78.5)/sin(11.5) = 314.57005... ft

6 0

2 years ago

Danielle needs to walk 2.5. if she wants to teach her destination in 30 minutes(1/2),how fast does she need to walk?

adelina 88 [10]

Answer:

the correct answer is B. 5 miles per hour

Step-by-step explanation:

if she walks 5 miles in a hour she can walk 2.5 miles in 30 minutes

8 0

3 years ago

Geometry question, any help is appreciated

kodGreya [7K]

Answer:

Hence, the ratios are given by 5:7, 25:49, 125:343.

Step-by-step explanation:

We are given two spheres such that:

Volume of small sphere $V_{s}$ = 250 $yd^{3}$

Volume of large sphere $V_{l}$ = 686 $yd^{3}$ .

Then the ratio of volume = 250 : 686 = 125 : 343.

Since, the volume of a sphere = $\frac{4 \pi \times r^{3}}{3}$ , this gives us that the ratio of the radius = ∛ $V_{s}$ : ∛ $V_{l}$

i.e. The ratio of the radius = ∛125 : ∛343 = 5 : 7.

Further, as the surface area of a sphere = $4 \pi \times r^{2}$ , this gives us that the ratioof surface area = $r_{s} ^{2}$ : $r_{l} ^{2}$

i.e The ratio of the surface area = $5^{2}$ : $7^{2}$ = 25 : 49

So, the ratio of the surface areas = 25 : 49.

Hence, the ratios are given by 5:7, 25:49, 125:343.

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3 years ago

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Find the area of a circle with radius, r = 88cm.<br> Give your answer rounded to 3 SF.

rusak2 [61]

Answer:

find using calculator yourself:))

Step-by-step explanation:

pi x r x r = pi x 88 x 88 = answer

7 0

3 years ago

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