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xxMikexx [17]
3 years ago
13

ILL GIVE BRAINLIEST PLEASE HELP WITH THESE ALGEBRA QUESTIONS show work pls

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
3 0

Answer:

17.) 18^{4} + 2x^{3} - 14x^{2}

18.) 9x^{5} + 27x^{4}

19.) -12y^{3} - 12y^{2} - 12y - 12

20.) x^{2} + 9x + 20

21.) 4x^{2} - 5x - 6

22.) m^{6} +2m^{5} + m^{4}

23.) 2 m ^{7}+ 3 m ^{6} + 2 m ^{4} + 10 m ^{3} + 15 m^{ 2} + 10

Step-by-step explanation:

17.) Distribute 2x^{2} to all of the terms in the parenthesis.

18.) Combine Like Terms (x and 9x^{4}\\) Multiply all other terms by 9x^{4}

19.) Multiply terms within the separate parenthesis together

20.) Use FOIL and expand the polynomial

21.) Use FOIL and expand the polynomial

22.) Combine like terms and multiply the contents of the parenthesis by the exponent

23.) Expand  ( m^{ 4} + 5 ) ( 2 m^{ 3} + 3 m ^{2} + 2 )  by multiplying each term in the first expression by each term in the second expression.

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Jeff saved 33 more nickels than dimes. He had 4 times as many nickels as dimes. How much did he save in all
AlexFokin [52]

Answer:

He saved $3.30 in all.

7 0
3 years ago
3. In the figure below, E is on AD and C is on BD. The dimensions given are in meters. What is the length, in meters, of CD?
damaskus [11]

Answer:

C. 3,960

Step-by-step explanation:

∆ADB ~ ∆EDC. Therefore,

\frac{AB}{EC} = \frac{DB}{DC}

\frac{2,000}{1,200} = \frac{2,640 + x}{x} (substitution)

Solve for x

\frac{5}{3} = \frac{2,640 + x}{x}

Cross multiply

5*x = 3(2,640 + x)

5x = 7,920 + 3x

5x - 3x = 7,920

2x = 7,920

x = 7,920/2

x = 3,960 meters

7 0
3 years ago
Angela is shopping for pet supplies and needs to buy a kennel and several toys. At Paws R Us, she would pay $50.75 for the kenne
zhenek [66]

Answer: t>6

Step-by-step explanation:

Amount to pay = Cost of kennel + (Cost per toy )x (Number of toys)

Let t = the number of pet toys Angela would need to buy for Paws R Us to be the cheaper option.​

Given, At Paws R Us, she would pay $50.75 for the kennel and $3.75 for each pet toy.

Amount to pay =  $(50.75 + 3.75t)

At Truth or Tail, she would pay $43.25 for the kennel and $5 for each pet toy.

Amount to pay =  $(43.25 + 5t)

According to the question , we have

50.75 + 3.75t < 43.25 + 5t

Subtract 3.75t from both sides

50.75+ 3.75t -3.75t   < 43.25 + 5t -3.75t

⇒ 50.75< 43.25 +1.25 t

Subtract  43.25 from both sides, we get

50.75 - 43.25 < 1.25 t

⇒  7.5< 1.25 t

Divide both sides by 1.25 we get

⇒   6<t

Hence, the required inequality to represent t, the number of pet toys Angela would need to buy for Paws R Us to be the cheaper option:

t>6 .

5 0
4 years ago
2(x-3)=14<br> -5(x-1)= 40<br> 12(X+20)=24
kakasveta [241]
2x-6=14 2x=20
a)x=10
-5x5=40 -5x=35
B)x=-7
12x+240=24 12x=-216
C) x=-18
3 0
3 years ago
Suppose a jumbo ice cream cone is filled with vanilla and strawberry ice cream at a ratio of 2:1. If the diameter of the cone is
quester [9]
Fraction of strawberry = 1 / (2 + 1)
Fraction of strawberry = 1/3

Volume = πr²h/3
Volume = π(1.5)²(8)/3
Volume = 6π

Volume of strawberry = 1/3 x 6π
Volume of strawberry = 2π in³
5 0
3 years ago
Read 2 more answers
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