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4 years ago

Determine which factors below can be the dimensions of a rectangle with an area of .

Mathematics

1 answer:

Alenkinab [10]4 years ago

7 0

Answer:

Step-by-step explanation:

Area of a rectangle is length * width.

The question asks which of the following (length * width) will give the expression for area...

We multiply each, and whichever is equal to the expression for area given, is the answer. We use the distributive property to expand.

Distributive property is $a(b+c)=ab+ac$

$(3x-7)(4x+9)\\=12x^2+27x-28x-63\\=12x^2-x-63$

This is not the answer.

$(3x+7)(4x-9)\\=12x^2-27x+28x-63\\=12x^2+x-63$

We don't need to do more because B is equal to the expression of area given.

B is the correct answer.

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Each sister bought a gift for their mom. Maggie spent 3 times as much as Karen. Karen spent half as much as Jasmine. Altogether,

snow_tiger [21]

Answer:

Maggie spent =30

Karen spent = 10

Jasmine spent =20

Step-by-step explanation:

In this we use algebra to solve.we give the sisters unknowns, to help us solve the equation.

we dont know how much jasmine used so we give her the unknown x.you can use any letter but ill us x.

karen used half as much as karen so we give her 1/2x because it was half of jasmine.maggie used 3 times that of karen so w give her 3(1/2x).

maggie =3(1/2x)

Karen =1/2x

jasmine =x

3(1/2x) + 1/2x + x = 60

3/2x + 1/2x + x = 60

2x + x = 60

3x=60

x=20

where we have x =we replace with 20

e.g karen 1/2x => 1/2 x 20 =10

if you need any clarifications please do tell me in the comment section.i would like to help more if you need help.thx

Hope this helps and if it does mark as branliest anwer thx

6 0

3 years ago

Aakash has a fever. His body temperature during the day was 99.2°F. By evening, his body temperature has increased by 3.4°F. His

Lera25 [3.4K]

Answer:

Step-by-step explanation:

Increase means his temp is going up. Just add.

99.2° + 3.4°

=102.6°

3 0

2 years ago

Let's see how many of you are as dumb as Tik Tok. 8÷2(2+2)

Stels [109]

Answer:

The answer is 16

Step-by-step explanation:

2 + 2 is 4 because it's in brackets

8 ÷ 2 is 4

Since they are together this means you have to multiply them.

So 4 × 4 is 16.

3 0

3 years ago

Read 2 more answers

Which value is a solution to the open sentence? 4x-5=31

g100num [7]

4x-5=31

Add 5 to both sides
4x=36

Divide both sides by 4
x=9

Final answer: 9

3 0

3 years ago

Read 2 more answers

The opening soccer game at the new arena was attended by approximately 2,800 Caucasians, 4,800 African Americans, and 15,00 Hisp

worty [1.4K]

Answer:

The ratio of African Americans to Hispanics Americans present is 16 : 5

Explanation:

Given the people attending the soccer game were:

2800 among them are Caucasians

4800 are African Americans

1500 are Hispanics

And, 1400 of those were from other ethnic backgrounds

We have to find the Ratio of African Americans to Hispanics Americans

Therefore,

African Americans : Hispanics Americans = 4800 : 1500

$\frac{\text { African American }}{\text { Hispanics American }}=\frac{4800}{1500}=\frac{48}{15}=\frac{16}{5}$

Hence, the ratio of African Americans to Hispanics Americans present in the ratio were 16 : 5

5 0

4 years ago