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mrs_skeptik [129]
3 years ago
8

!!MATH GENIUSES HELP ME!!

Mathematics
1 answer:
seraphim [82]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Let x be Bill’s scores.

Let y be Theo’s scores.

x + y = 90

x² = y

Solve for x in the second equation.

x = √y

Put x as √y in the first equation and solve for y.

√y + y = 90

√y = 90 - y

y = (90 - y)²

y = - y² - 180y - 8100

0 = -y² - 181y - 8100

0 = (-y+81)(y-100)

-y+81=0

y = 81

y - 100 = 0

y = 100

100 does not work if we plug in to check, so y is 81.

y = 81

Put y as 81 in the first equation and solve for x.

x + 81 = 90

x = 9

Bill scored 9 goals and Theo scored 81.

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3) Suppose you deposit $10,000 in a savings account that pays interest at an annual rate of 5%
jeyben [28]

9514 1404 393

Answer:

  3.67 years

Step-by-step explanation:

The amount is found using the compound interest formula.

  A = P(1 +r/n)^(nt)

for principal P invested at annual rate r compounded n times per year for t years.

We can solve this for t:

  A/P = (1 +r/n)^(nt) . . . . divide by P

  log(A/P) = (nt)log(1 +r/n) . . . . take the logarithm

  t = log(A/P)/(n·log(1 +r/n)) . . . . divide by the coefficient of t

Filling in the given values, we find ...

  t = log(12000/10000)/(4·log(1 +0.05/4)) ≈ 3.6692

It will take about 3.67 years for the balance to reach $12,000.

8 0
2 years ago
Read 2 more answers
Write an equation, in slope intercept form, that passes through the points (-16,8 )
krek1111 [17]

It would be: y-y1 = m(x-x1)

y-8 = m(x+16)

y-8 = mx+16m

y = mx+16m+8

you have to calculate m, which can be possible if two coordinates are given otherwise it's the final possible answer...

5 0
3 years ago
A store had 913 sodas, both diet and regular. The ratio of diet sodas to regular sodas was 8:3. How many diet sodas were there?
Elodia [21]

Answer:

<h2>There are 664 diet soda</h2>

Step-by-step explanation:

Step one:

given data

total soda= 913

we are told that the ratio of diet sodas to regular sodas is 8:3

this means that for every 8 diet soda there is 3 regular soda

the total ratio is 8+3=11

Step two:

we are going to use part to all principle

let the diet soda be x

8/11=x/913

cross multiply

11x=913*8

divide both sides by 11

x=913*8/11

x=7304/11

x=664

There are 664 diet soda

5 0
2 years ago
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Charra [1.4K]

Answer:

x^2 - 6x - 7

Step-by-step explanation:

Roots, 7 and -1

x = 7 is the same as x - 7 = 0

x = -1 is the same as x + 1 = 0

multiply (x-7) by (x + 1)

x(x -7) +1(x - 7)

x^2 -7x + x - 7

x^2 - 6x - 7

3 0
3 years ago
Read 2 more answers
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ElenaW [278]
Number of medium cherry slices : 10
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7 0
3 years ago
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