3 years ago

If -2x + 3 = 7 and 3x + 1 = 5 + y , what is the value of y

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

4 0

Answer: -10

Step-by-step explanation:

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What is the most accurate representation of the area of a plot measuring 11.7cm by 15.4cm ?

Aleks04 [339]

Area=width*height
area=(11.7)*(15.4)
area=180.18cm^2

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3 years ago

The total surface area of a cube is 96cm2, find its volume.

Setler [38]

Answer:

$\huge\boxed{V=64cm^3}$

Step-by-step explanation:

The formula of a surface area of a cube:

$SA=6a^2$

The formula of a volume of a cube:

$V=a^3$

We have

$SA=96cm^2$

Calculate the edge length (<em>a</em>).

$6a^2=96$ <em>divide both sides by 6</em>

$a^2=16\to a=\sqrt{16}\\\\a=4(cm)$

Calculate the volume of a cube:

$V=4^3=64(cm^3)$

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3 years ago

You are trying out a new recipe for raisin bread. Each batch of raisin bread dough makes three loaves, and each loaf contains 20

GrogVix [38]

Answer:

0.76 or 76%

Step-by-step explanation:

Please kindly check the attached files for details

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3 years ago

A standard toilet uses 1.6 gallons per flush. If a toilet is flushed five times per day, how much water will be used in a month

djyliett [7]

Answer:

I believe the answer is 48 gallons.

Step-by-step explanation:

Multiply 1.6 by 30 and you get 48

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3 years ago

Read 2 more answers

The employees of a firm that manufactures insulation are being tested for indications of asbestos in their lungs. The firm is re

diamong [38]

Answer:

0.070

Step-by-step explanation:

Y = number on trial

Y has a negative binomial distribution

r = 3

P = 30% = 0.3 probability of positive indication.

P(Y = 11) probability of 11 employees that must be tested to get 3 positives

Y-1Cr-1*p^r*q^(y-r)

Y-1 = 11-1 = 10

r-1 = 3 -1 = 2

10C2 x 0.3³x0.7⁸

45x0.027x0.05764801

= 0.070

This is the probability that 11 employees must be tested to get 3 positives.

8 0

3 years ago