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3 years ago

How do you work out y?

Mathematics

2 answers:

frutty [35]3 years ago

6 0

Answer:

Step-by-step explanation:

Write the sides as proportions:

$\frac{30}{18}=\frac{40}{y}$

and cross multiply to get

30y = 720 so

y = 24

yan [13]3 years ago

5 0

You could cross multiply and the answer will be y=24 hope this helps:)

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vovikov84 [41]

Do you not have a graph to go with it?

4 0

3 years ago

What us the volume of this?

ExtremeBDS [4]

Break down the figure into 2 parts. Then use volume formula and multiply.
V=lwh
V=3x3x2
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5 0

3 years ago

Read 2 more answers

−30=5(x+1)minus, 30, equals, 5, left parenthesis, x, plus, 1, right parenthesis<br> x =x=x, equals

ivann1987 [24]

Answer:

x = -7

Step-by-step explanation:

−30=5(x+1)

Divide each side by 5

-30/5=5/5(x+1)

-6 =x+1

Subtract 1 from each side

-6-1 = x+1-1

-7 =x

8 0

3 years ago

Giovanni justifies whether the expression –4x – 8 is equivalent to Negative 2 (x + 1) minus 2 (x + 3) by letting x = 3 in both e

Vladimir [108]

Answer:

When x = 3, the solutions to the expressions are–20 and –20

Step-by-step explanation:

–4(3) – 8 Multiply

-12 - 8 Subtract

-20

-2(3 + 1) - 2(3 + 3) Simplify in the parentheses

-2(4) - 2(6) Multiply

-8 - 12 Subtract

-20

6 0

3 years ago

Read 2 more answers

(02.02 MC) Triangle ABC is shown. A is at negative 2, 1. B is at negative 1, 4. C is at negative 4, 5. If triangle ABC is reflec

Bezzdna [24]

Given:

The vertices of a triangle ABC are A(-2,1), B(-1,4) and C(-4,5).

Triangle ABC is reflected over the x‐axis, reflected over the y‐axis, and rotated 180 degrees.

To find:

The point B'.

Solution:

If a figure reflected over x-axis, then

$(x,y)\to (x,-y)$

$B(-1,4)\to B_1(-1,-4)$

If a figure reflected over y-axis, then

$(x,y)\to (-x,y)$

$B_1(-1,-4)\to B_2(-(-1),-4)$

$B_1(-1,-4)\to B_2(1,-4)$

If a figure rotated 180 degrees about the origin, then

$(x,y)\to (-x,-y)$

$B_2(1,-4)\to B'(-(1),-(-4))$

$B_2(1,-4)\to B'(-1,4)$

So, the coordinate of point B' are (-1,4).

Therefore, the correct option is A.

6 0

3 years ago