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xz_007 [3.2K]
3 years ago
7

Please help! :):):);)

Mathematics
1 answer:
AnnZ [28]3 years ago
6 0

Answer:

So 60% of this unknown number is 28

Let this unknown number be n

60/100 × n = 28

0.60 × n = 28

n = 28/0.6

n = 46.7

To the nearest wholw number is 47

So there are 47 votes in total

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What is the result converting 81 inches to feet?
scoundrel [369]
1 foot is 12 inches. So just divide 81 by 12. 
81/12 = 6.75 
So your answer is 6.75 feet.
8 0
3 years ago
Read 2 more answers
The function h(t) = -4.9t² + 19.6t is used to model the height of an object projected in the air where h(t) is the height (in me
goblinko [34]

Answer:

Step-by-step explanation:

when h(t)=0

-4.9 t²+19.6t=0

4.9t(-t+4)=0

either t=0 or t=4

so domain is 0≤t≤4

for range

h(t)=-4.9t²+19.6t

=-4.9(t²-4t+4-4)

=-4.9(t-2)²+19.6

so range is 0≤h≤19.6

5 0
3 years ago
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Which describes the cross section of a square prism that passes through vertices A, B, and C?
expeople1 [14]

Answer:

In triangle ABC one side equal 8\sqrt{2} and two sides equal 4\sqrt{13}

Step-by-step explanation:

We are given a prism whose base is square with sides 8 in and height 12 in.

If we take cross section through vertices A, B and C

We will get a cross section as triangle.

In triangle ABC, sides are AB, BC and AC

AB is diagonal of top square whose side 8 in.

AB=\sqrt{8^2+8^2}=8\sqrt{2}

AC is face diagonal of front face.

AC=\sqrt{8^2+12^2}=4\sqrt{13}

BC is face diagonal of right face.

BC=\sqrt{8^2+12^2}=4\sqrt{13}

AC=BC≠AB

Hence, In triangle ABC one side equal 8\sqrt{2} and two side equal 4\sqrt{13}

6 0
3 years ago
Read 2 more answers
Kathie buys a bottle of fruit juice for $2.50 and a few loaves of bread for $1.20 each.
Nadusha1986 [10]

Answer:

a. 5 loaves, b. 14 loaves

Step-by-step explanation:

a.8.50=2.50+1.20x

  6.00=1.20x

  5=x

5 loaves

b.20=2.50+1.20x

   17.50=1.20x

   14.6=x

14 loaves

3 0
3 years ago
Write in slope-intercept form an equation of the line that passes through the given points. (-1, -1) (1, 5)
PSYCHO15rus [73]
<h2>Answer:</h2>

Step 1: We need to find the slope (or <em><u>m</u></em>) <u><em>FIRST</em></u> using <u><em>slope formula*.</em></u>

m = \frac{5 - (-1)}{1 - (-1)}\\\\m = \frac{6}{2} = 3

m = 3

Step 2: Now we find the y-intercept (or <u><em>b</em></u>) using the <u><em>slope-intercept formula**</em></u>, ONE of the 2 points given, and the slope we just found.

5 = 3(1) + b\\\\5 = 3 + b\\\\2 = b

b = 2

Step 3: Now we put it all together we get our equation in <u><em>slope-intercept form**.</em></u>

<u><em></em></u>y = 3x + 2<u><em></em></u>

<u><em></em></u>

**Slope-intercept form: y = mx + b

*Slope formula: m = \frac{y_2 - y_1}{x_2 - x_1}

3 0
3 years ago
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