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Anni [7]
3 years ago
13

y2−10y+25=−49 Solve the following quadratic equation by the square root method. If needed, write your answer as a fraction reduc

ed to lowest terms.
Mathematics
1 answer:
ELEN [110]3 years ago
7 0
Y2-10y+25= -49
-8y+25=-49
-8y=-49-25
-8y-74 divide both side by 8
Y=37/4
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(5x-6)(-x+4) using the box method
Sophie [7]

Answer:

-5x²+26x-24

Step-by-step explanation:

(5x-6)(-x+4)

=5x(-x+4)-6(-x+4)

=-5x²+20x+6x-24

=-5x²+26x-24

4 0
2 years ago
A fertilizer company manufactures 10-pound bags of fertilizer with a standard deviation of 0.24 pounds per bag. The bag weights
Ksju [112]

Answer:

the probability that a sample of 4 bags will have a mean weight less than 9.8 pounds is 0.05

Step-by-step explanation:

Given the data in the question;

μ_x = 10 pound bags

standard deviation s_x = 0.24 pounds

sample size n = 4

The bag weights are normally distributed so;

p( x' less than 9.8 ) will be;

p(  (x'-μ_x' / s_x')   <   (9.8-μ_x' / s_x')  )

we know that;

μ_x' = μ_x = 10

and s_x' = s_x/√n = 0.24/√4

so; we substitute

p(  z  <  ( (9.8 - 10) / (0.24/√4)  )

p(  z  <  -0.2 / 0.12   )

p(  z  <  -1.67   )

{ From z-table }

⇒ p(  z  <  -1.67   ) = 0.0475 ≈ 0.05

Therefore, the probability that a sample of 4 bags will have a mean weight less than 9.8 pounds is 0.05

3 0
3 years ago
State the slope-intercept form of the equation for the graph with the points 3,0 and 0,-1
Dvinal [7]

Answer:

The answer is y=1/3x-1

Step-by-step explanation:

m=1/3

y-y=m(x-x1)

y-(-1)=1/3(x-0)

y+1=1/3x-0

-1 -1

y=1/3x-1

6 0
3 years ago
Ms. Hernandez drives 40 miles each day — to and from work — 5 days a week. How many gallons of gas does she use? What informatio
nasty-shy [4]

Answer:

Step-by-step explanation:

40 = 5d

-Divide 5 by both sides by 5 which cancels 5 and leaves d but, then divide 40 by 5 which gives you 8.

D=8

-The information missing is how many gallons of gas he use in a day.

4 0
3 years ago
Need help quick please
valina [46]

Answer:

Disagree

Step-by-step explanation:

Remember rotating 90 degrees  means (y,-x)

A= (1,2)

A'= (2,-1)

So it is disagreed.

Hope this help :)

3 0
2 years ago
Read 2 more answers
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