3 years ago

Need help fast with my work

Mathematics

1 answer:

Mademuasel [1]3 years ago

5 0

Answer:

-25

Step-by-step explanation:

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Help me pls in mathmatics

Hoochie [10]

Answer:

-20

Step-by-step explanation:

Lets substitute to solve:

$\frac{mn}{p} +(-n)$

$\frac{2(12)}{-3} +(-12)$

$\frac{24}{-3} +(-12)$

$-8} +(-12)$

$-20$

3 0

3 years ago

What is the volume of this pyramid? 945 cm³ 1260 cm³ 1890 cm³ 2520 cm³ A pyramid with a right triangular base. The right triangu

notsponge [240]

Answer:

The volume of the pyramid is $1,260\ cm^{3}$

Step-by-step explanation:

we know that

The volume of the triangular pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the triangular base

H is the height of the pyramid

step 1

Find the area of the base B

$B=\frac{1}{2}bh$

we have

$b=14\ cm$

$h=18\ cm$

substitute

$B=\frac{1}{2}(14)(18)=126\ cm^{2}$

step 2

Find the volume

we have

$B=126\ cm^{2}$

$H=30\ cm$

substitute

$V=\frac{1}{3}BH$

$V=\frac{1}{3}(126)(30)=1,260\ cm^{3}$

5 0

3 years ago

Read 2 more answers

Solve the equation n+75=135

goblinko [34]

Answer:

n=60

Step-by-step explanation:

subtract 75 from 135

6 0

3 years ago

Read 2 more answers

How do I show the work where 69 miles per hours is proportional to the number of hours

riadik2000 [5.3K]

<span>1. First, label the axis on your graph, with units:

time on the x-axis, in units of hours;

distance on the y-axis, in units of miles.

2. Draw a graph of distance vs. time. Distance after the first hour = 69 miles, distance after the 2nd hour = 138 miles, etc.

3. Observe that this graph is a STRAIGHT LINE with constant slope. Therefore the relationship is PROPORTIONAL.

For every other kind of graph -- i.e. not a straight line -- the relationship is NON-PROPORTIONAL.

Hope this helps. </span>

6 0

4 years ago

Ind the area of a equilateral triangle (regular 3-gon) with the given measurement 6-in side. A=sq. In.

Zinaida [17]

Can u be more detailed please??

8 0

4 years ago