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spin [16.1K]
3 years ago
9

Can't remember how to solve a certain equation. Number 10!

Mathematics
1 answer:
Vikentia [17]3 years ago
6 0
The answer is going to be 1 and -4 as the 2s cross divide out

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After spending 30% of her salary Sara was able to deposit $120 in the bank. What is her salary?
Katena32 [7]

Answer: $400

Step-by-step explanation:

So first you set it up in a equation. You put the amount she put in the bank over x (the x represents her full salary) which equals the percent she already spent over her full salary. That would be 120/x=30/100 you would then cross-multiply to get 12,000 = 30x. you then divide 30 from both sides to get x =400.

3 0
3 years ago
Lupe bought 8 pounds of pretzels at a local wholesaler for $18. Her friend Charles bought 6 pounds of pretzels at the supermarke
Novay_Z [31]

Answer:

20

Step-by-step explanation:

Charle would have spent that much because one pound is 2.50

15 divided by 6=2.50

2.50x8=20

3 0
3 years ago
Read 2 more answers
There are 12 rabbits at a pet store Gabriela has 5 1/2 ounces of parsley to feed the rabbits how much parsley does each rabbit g
julia-pushkina [17]

Answer:

2.18 ounces

Step-by-step explanation:

12/5.5=2.181...

rounded it is 2.18

hope this helps :3

if it did pls mark brainliest

6 0
2 years ago
Help plsssssssssssssssssssss
Alika [10]

Answer:

a. .15 b. 5.40

Step-by-step explanation:

Hi! The first thing you want to do is find the unit rate, which would be 9 divided by 60. This should be 15 cents per hour. Next, for the second part, you multiply by 36, which should be $5.40. Hope this helps!

5 0
2 years ago
Write a polynomial in standard form with the zeros -4,0, 1, and 4.
gavmur [86]

Answer: x^4-x^3-16x^2+16x

Step-by-step explanation:

Factor theorem : If x=a is a zero of a polynomial p(x) then (x-a) is a factor of p(x).

Given: Zeroes of polynomial : -4,0, 1, and 4.

Then Factors = (x-(-4)), (x-0), (x-1) and (x-4)   [By factor theorem ]

=(x+4), (x-0), (x-1) and (x-4)

Multiplying these factors to get polynomial in standard form.

(x+4)\times(x-0)\times(x-1)\times(x-4)  \\\\= x(x+4)(x-4)(x-1)\\\\= x(x^2-4^2)(x-1)\\\\= x(x^2-16)(x-1)\\\\= x(x^2-16)(x-1)\\\\=x(x^2x+x^2\left(-1\right)+\left(-16\right)x+\left(-16\right)\left(-1\right))\\\\= x(x^3-x^2-16x+16)\\\\=x^4-x^3-16x^2+16x

Hence, B is the correct option.

8 0
3 years ago
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