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3 years ago

HELP ASAP! Will mark brainliest! Please give actual, correct answers because this is very important.

Mathematics

1 answer:

earnstyle [38]3 years ago

8 0

Answer:

1.) -t (r - s)

-3 (-6 - 3)

16 + 6

22

2.) B

A linear equation consists of y = slope + y-intercept (y = mx +b). In this case, the slope will rise by 1 and run (right) by 1.

3.) I`m sorry I`m not too sure about this one

I hope the first couple helped, I`m sorry I don`t know the last one.

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Divide use either way to record partial quotient 198÷9

Sauron [17]

It equals 22.............

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3 years ago

Heyy could you help me out with this problem???

Elan Coil [88]

Answer:

not sure

Step-by-step explanation:

sorry :/

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3 years ago

What is the value of x in the equation (-35= 1? Explain.

s344n2d4d5 [400]

Answer:

x=1/35

Step-by-step explanation:

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3 years ago

What multiplies to -29 and adds to 1

Margarita [4]

First set up equation
x times y=xy

so
xy=-29
and
x+y=1
subtract x from both sides
y=1-x
subsitute 1-x for y in first equation
x(1-x)=-29
distribute
x-x^2=-29
add x^2 to both sides
x=-29+x^2
subtract x from both sides
0=x^2-x-29
so we can use the quadratic formula to solve for x if the equation=0 and it is in ax^2+bx+c form so

if
ax+bx+c=0 then x= $\frac{ -b+/-\sqrt{b^2-4ac} }{2a}$ that means x= $\frac{ -b-\sqrt{b^2-4ac} }{2a}$ or x= $\frac{ -b-\sqrt{b^2-4ac} }{2a}$ so

x^2-x-29
a=1
b=-1
c=-29
$\frac{ -(-1)-\sqrt{-1^2-4(1)(-29)} }{2(1)}$ = $\frac{ +1-\sqrt{1^2-(-116)} }{2(1)}=\frac{ +1-\sqrt{1^2+116} }{2}=\frac{ +1-\sqrt{117} }{2}= \frac{1-10.816653826392}{2} = [tex] \frac{-9.816653826392}{2}= -4.908326913196$

the second number is
$\frac{ -(-1)+\sqrt{-1^2-4(1)(-29)} }{2(1)}=\frac{ +1+\sqrt{1^2+(-116)} }{2(1)}= \frac{1+10.816653826392}{2} = \frac{ +1+\sqrt{117} }{2}= \frac{10.816653826392}{2}=5.908326913196$

the two numbers are
5.908326913196 and
-4.908326913196

7 0

3 years ago

Suppose the time to complete a 200-meter backstroke swim for female competitive swimmers is normally distributed with a mean μ =

Jobisdone [24]

In order to be given a scholarship, a swimmer must complete the 200-meter backstroke in no more than 144 seconds.

Explanation

Given that the time to complete a 200-meter backstroke swim for female competitive swimmers is normally distributed with a mean μ = 141 seconds and a standard deviation σ = 7 seconds

The fastest 6% of female swimmers in the nation are offered college scholarships. So, the probability will be 0.06

According to the normal distribution table, the z-score for probability of 0.06 is 0.5239

Now using z-score formula z= (x- μ)/σ , we will get...

$0.5239= \frac{x-141}{7}\\ \\ x-141= 3.6673\\ \\ x= 3.6673+141 \\ \\ x= 144.6673$

That means, $x < 144$ (in whole number)

So, in order to be given a scholarship, a swimmer must complete the 200-meter backstroke in no more than 144 seconds.

5 0

3 years ago