MATHEMATICS HIGH SCHOOL

10 x (250 + 45) PLZ HELP DUE IN 5 MINUTES

Answers

Answer 1

Answer:

Answer:

2950

Step-by-step explanation:

10(250+45)

10(295)

2950

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What does 7x - 9y equal when x = 4 and y = 130?
Help! Simplify (see photo) pls explainIf you don’t know pls don’t answer thanks

Which choice is equivalent to the expression below when y 0?√Y^+√9Y^3-3Y√Y

A.Y√10Y-3Y√Y
B.-2Y√11Y
C.Y√Y
D.√10Y^3-3Y√Y

Answers

$y√(y)+√(9y^3)-3y√(y)=y√(y)+\sqrt9\cdot√(y^2\cdot y)-3y√(y)\n\n=y√(y)+3y√(y)-3y√(y)=y√(y)\n\nAnswer:C.$

Let f(x) = x^2 – 81. Find f–1(x).
Can someone double-check what I have?

Answers

For the answer to the question above, if you are just checking your answer, I'll just show the solution. Is it just ok?
f(x) = x2 - 81
y = x^2 - 81
x = y^2 - 81
x + 81 = y^2
y = ± √(x + 81)

f⁻¹(x) = ± √(x + 81) answer

Answer is ±√x+81

I hope I helped you with my answer somehow.

I hope this helps you

y=x^2-81

x^2=y+81

x=square root of y+81

f^-1 (x)= square root of x+81

Zach brought two jet skis for $15,480 He will make 36 equal payments. How much will each be?

Answers

15,480 divided into 36 payments is $430 per payment

He will pay $430 each for his jet skis.

How many solutions does the equation 6s – 3s – 9 = –2 + 3 have? Only one
None
Two
Infinitely many

Answers

The answer to this question is Infinitely many

only one the answer is A

Here are 10 test scores: 50, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 76. How does removing the outlier 50 affect the mean?A.
The set has 50 as an outlier and removing it decreases the mean by about 6.

B.
The set has 50 as an outlier and removing it decreases the mean by about 2.

C.
The set has 50 as an outlier and removing it increases the mean by about 3.

Answers

The answer is C.
The set has 50 as an outlier and removing it increases the mean by about 3.

Since 50 is significantly smaller number than all others, it is expected that removing 50 will increase the mean.
The first mean is 76:
$X_(1) = (50+74+76+77+78+79+80+80+82+84)/(10) = (760)/(10) =76$

The mean after removing 50 is:
$X_(2) = (74+76+77+78+79+80+80+82+84)/(10) = (710)/(90) =78.89<span>$
X₂ ≈ 79

The difference between the second and the first mean is 79 - 76 = 3, thus
removing 50 as an outlier increases the mean by about 3.

Round 222,977 to the nearest hundred

Answers

The place the value of 9 is in is the hundreds place. So, any number greater than 5 is rounded up. 7 is greater than 5, so the 9 becomes a 0 and the next number is increased by 1. All the values after are marked as a 0. The answer is 223,000.

223,000.There is a rounding rap to help :)

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