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2 years ago

Solve ( x− 4)^2 = 9.

Mathematics

2 answers:

Marysya12 [62]2 years ago

8 0

Answer:

= 7

Step-by-step explanation:

IgorC [24]2 years ago

5 0

Answer:

x= 7, 1

Step-by-step explanation:

Take the root of both sides and solve.

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Does the image have rotational symmetry? If so, by how many degrees?

Goshia [24]

☽------------❀-------------☾

Hi there!

~

Yes, the image has rotational symmetry. I think about 180 degrees if i did this this right.

❀Hope this helped you!❀

☽------------❀-------------☾

4 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

True or false square root 54 is close to 7?

antoniya [11.8K]

No it's over : 7.3 , unless your prompts context is close to as in getting there or close in general?

3 0

3 years ago

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Luigi is an urban planner. As an independent contractor, he charges a $140 fee plus $25 per hour for

Anuta_ua [19.1K]

Answer:

Function: $y=140+25x$

Amount earned for 10 hours of work: $\$390$

Step-by-step explanation:

Let be "x" the number of hours worked on a project and "y" the total amount Luigi charges for a project.

Based on the data given in the exercise, you can identify that:

$140 is a fixed amount.
For each hour worked on the project, Luigi charges $25. This can be expressed as: $25x$

Then, the total amount he charges for a project is the sum of $140 and $25x$ . This can be represented with the following function:

$y=140+25x$

To calculate the amount of money earned for 10 hours of work, you must substitute $x=10$ into the function and evaluate. Then:

$y=140+25(10)\\\\y=390$

7 0

3 years ago

The Unit Rate is when both units in a rate are equal to each other (ie. 5 cats : 5 dogs)

horsena [70]

Answer:

False

Step-by-step explanation:

Unit Rate Definitions Unit rate is used to compare quantities in which the second quantity is one. Common examples of unit rate would include, miles per hour earnings per hour cost per gallon.

How much of something per 1 unit of something else. Examples: • 100 cars pass by in 2 hours. The unit rate is 50 cars per hour.

3 0

2 years ago

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