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Alchen [17]
3 years ago
12

I need answer as quick

Mathematics
2 answers:
SCORPION-xisa [38]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Given

(x + 7)(x + 1)(x + 4) ← expand the second/ third factors using FOIL

= (x + 7)(x² + 5x + 4)

= x(x² + 5x + 4) + 7(x² + 5x + 4) ← distribute both parenthesis

= x³ + 5x² + 4x + 7x² + 35x + 28 ← collect like terms

= x³ + 12x² + 39x + 28 → C

Novosadov [1.4K]3 years ago
3 0

Answer:

C

Step-by-step explanation:

(x+7)(x+1)(x+4)=

x^3+12x^2+39x+28 or C

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Jeremiah makes a recipe that calls for 1 1/2 cups of flour and 3/4 stick of butter. If Jeremiah uses 3 sticks of butter, how man
scoray [572]

Answer:

6 cups of flour

Step-by-step explanation:

we know that

the ratio of the recipe=(1 1/2)/(3/4)

1 1/2=1.5 cups of flour

3/4 stick of butter-------> 0.75 stick of butter

by proportion

1.5/0.75=x/3---------> 3*1.5=0.75*x

x=3*1.5/0.75----------> x=6 cups of flour

4 0
3 years ago
If Fred travels 135 miles in 3 hours at a rate of 45 mi/hr, find the rate at which he travels to cover a distance of 189 miles i
posledela
Rate (or speed) = distance/time


V1 = 135/3 = 45 mi/h

V2 = 189/3.5 = 54mi/h
8 0
3 years ago
The number of children at the library was 3 times the number adults. The total number of people at the library was 48. How many
Rufina [12.5K]

Answer:

D 36

Step-by-step explanation:

<em>Write the information algebraically</em>

c = 3a

c + a = 48

c = children, a = adults

<em>In the second sentence (in bold), we can replace c with 3a</em>

c + a = 48 → 3a + a = 48

<em>Simplify</em>

3a + a = 48 → 4a = 48 → a = 12 (divide both sides by 4)

<em>We can then substitute or plug in a = 12 into the original equation:</em>

c + a = 48 → c + 12 = 48 → c = 36 (subtract 12 from both sides)

<h3>There are 36 children</h3>
7 0
3 years ago
Please help me with this
hodyreva [135]

Answer:

1.) The quotient of a number and 2 = x ÷ 2

2.) A number decreased by 2 = x - 2

3.) 2 times a number = 2x

4.) 2 increased by a number = 2 + x

Step-by-step explanation:

Let's look for key words hidden in these sentences:

1.) The <u>quotient</u> of a number and 2 = The word quotient refers to division

2.) A number <u>decreased</u> by 2 = The word decreased refers to subtraction

3.) 2 <u>times</u> a number = the word times refers to multiplication

4.) 2 <u>increased</u> by a number = the word increased refers to addition

Hope this helps!

5 0
3 years ago
Honestly I don't know what to do at this point please help
shtirl [24]

Answer:

15 yds

Step-by-step explanation:

40 divided by 50 equals 4/5, so the lengths of the other triangle have to match that ratio. 3 fits into 12 four times and 15 five times, which makes it a four to five ratio.

5 0
4 years ago
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