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3 years ago

What is 3(m + 4) -12=-15

Mathematics

1 answer:

Crazy boy [7]3 years ago

4 0

Answer:

m equals -5

Step-by-step explanation:

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One rectangular solid with a square base has twice the height of another rectangular solid with a square base with the same side

galben [10]

Answer:

First rectangular solid and second Rectangular solid

1. Bases are in the form of square having same dimensions

2. Height of first rectangular solid=2 ×Height of second rectangular solid

The true statements are

A) The bases are congruent.→The meaning of term congruent is that , the two bases are in the shape of square having same dimensions.

(B) No, The solids are not similar.as ratio of side lengths in not same in each case , because the ratio of heights of two solid is equal to .

(D) Volume of first solid = x *x*2 H=2 x²H

Volume of second solid = x*x*H=x²H

Ratio of volumes =2:1

So, option (D) is true.

(E) Surface area of first solid =2[x*x+x*2 H+2 H*x]

=2[x²+4 H*x]=2 *x*[x+4* H]

Surface area of second solid = 2[x*x+x* H+ H*x]=2[x²+2 H*x]=2* x*[x+ 2*H]

Option A, D, E are correct about two solids.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A building has 4 offices. There are 4 people in each of the offices. Each person has 4 chairs. How many chairs are in the buildi

vfiekz [6]

You'd just have to cube the 4
4x4x4=64

3 0

3 years ago

Read 2 more answers

Erica solved the equation -5x - 25 = 78; her work is shown below. Identify the error and were it was made

Nata [24]

Answer:

Step-by-step explanation:

It's A because she subtracted a negative and that only make a bigger negative where she should have added

7 0

2 years ago

Suppose that the length of a phone call in minutes is an exponential random variable with parameter λ = 1/ 8. If someone arrives

Elis [28]

Answer:

a) P=0.535

b) P=0.204

c) P=0.286

Step-by-step explanation:

The exponential distribution is expressed as

$F(x>t)=e^{-\lambda t}$

In this example, λ=1/8=0.125 min⁻¹.

a) The probability of having to wait more than 5 minutes

$F(x>5)=e^{-0.125*5}=e^{-0.625}=0.535$

b) The probability of having to wait between 10 and 20 minutes

$F(1020)=e^{-0.125*10}-e^{-0.125*20}\\\\F(10$

c) The exponential distribution is memory-less, so it is independent of past events.

If you have waited 5 minutes, the probability of waiting more than 15 minutes in total is the same as the probability of waiting 15-5=10 minutes.

$F(x>15|t^*=5)=F(x>15)/F(x>5)=\frac{e^{-0.125*15}}{e^{-0.125*5}}=e^{-0.125*(15-5)}\\\\ F(x>15|t^*=5)=e^{-0.125*(10)}=F(x>10)=0.286$

5 0

3 years ago

A.step 1 B.step 2 C.step 3 D.step 4 Please help

Marizza181 [45]

Answer:

Step 3

Step-by-step explanation:

7 0

2 years ago