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3 years ago

If -7(y-3)= -14. What is the value of x?

Mathematics

2 answers:

pickupchik [31]3 years ago

7 0

Answer:

none

Step-by-step explanation:

no x because (y-3)=14 so the x wouldnt repeat

lana [24]3 years ago

5 0

Answer:

y = 5

Step-by-step explanation:

-7(y-3)= -14

Divide each side by -7

-7/-7(y-3)= -14/-7

y-3 = 2

Add 3 to each side

y-3+3 = 2+3

y = 5

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Is 64/80 and 20/25 equivalent as ratios

mojhsa [17]

YES！they are equivalent
64/80=4/5
20/25=4/5

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3 years ago

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A grain silo is in the shape of a cylinder with a hemisphere top. They cylinder is 20 feet tall. The volume of the silo is 2106

andreyandreev [35.5K]

Answer:

The radius of the silo is 5.788 feet.

Step-by-step explanation:

Since the silo has the shape of a cylinder, then;

Volume of the silo = Volume of a cylinder = $\pi$ $r^{2}$ h

Where: r is the radius of the silo, and h is the height.

Given that: volume = 2106 cubic feet, and height = 20 feet.

Then,

2106 = $\frac{22}{7}$ x $r^{2}$ x 20

2106 = $\frac{440}{7}$ $r^{2}$

2106 x 7 = 440 $r^{2}$

14742 = 440 $r^{2}$

$r^{2}$ = $\frac{14742}{440}$

$r^{2}$ = 33.5045

⇒ r = $\sqrt{33.5045}$

= 5.78831

r = 5.788 feet

The radius of the silo is 5.788 feet.

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3 years ago

What is the arithmetic mean of the following numbers? 69,93,72,83,57,69,92

Rama09 [41]

Answer:

Step-by-step explanation:

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3 years ago

Jeanine Baker makes floral arrangements. She has 15 different cut flowers and plans to use 5 of them. How many different selecti

AlladinOne [14]

For the first flower she has a choice of 15. For the second 14 (15 minus the one that was already used). For the third 13, and so on.

Each of the first 15 can be match with any of the second 14. Any of the first pairs can be matched with ant of the third 13 and so on.

This gives us

Number of Selections = Choices for Flower 1 x Choices for Flower 2 x Choices for Flower 3 x Choices for Flower 4 x Choices for Flower 5

$N_{s}=f_{1} \times f_{2} \times f_{3} \times f_{4} \times f_{5}$

$N_{s}=15 \times 14 \times 13 \times 12 \times 11$

$N_{s}=360,360$

You could also calculate this as the permutation $_{15}P_{5}=\frac{15!}{(15-5)!}$

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3 years ago

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70 POINTS! ∆ABC is reflected across the x-axis, then rotated 90° clockwise about the origin, and finally reflected across the li

madam [21]

Answer:

A'(1, 1); B'(3, 2); C'(1, 2)

Step-by-step explanation:

The original points are A(1,1 ), B(2, 3) and C(2, 1).

Reflecting the triangle across the x-axis will negate every y-coordinate; this maps

(1, 1)→(1, -1); (2, 3)→(2, -3); (2, 1)→(2, -1)

Rotating the figure 90° clockwise about the origin switches the x- and y-coordinates and negates the x-coordinate; this maps

(1, -1)→(-1 -1); (2, -3)→(-3, -2); (2, -1)→(-1, -2)

Reflecting across the line y=x will negate both the x- and y-coordinates; this maps

(-1, -1)→(1, 1); (-3, -2)→(3, 2); (-1, -2)→(1, 2)

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3 years ago

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