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2 years ago

PLLLLSSSSSSS HELP ME !!!!!!!???????

Mathematics

1 answer:

LenaWriter [7]2 years ago

7 0

Answer:

Step-by-step explanation:

because -3 is a zero, so x=-3

(k-1)(-3)²+k(-3)+1=0

9(k-1)-3k+1=0

9k-9-3k+1=0

6k=8

3k=4

k=4/3

(B)

∵ x=-1 is a zero of p(x)=kx²-4x+k

so k(-1)²-4(-1)+(-1)=0

k+4-1=0

k=-3

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Suppose the time that it takes a certain large bank to approve a home loan is Normally distributed with mean (in days) μ and sta

kolezko [41]

Answer:

Step-by-step explanation:

Null hypothesis (H0): population mean is equal to 5

Alternate hypothesis (Ha): population mean is greater than 5

Z = (sample mean - population mean) ÷ (sd/√n)

sample mean = 5.3, population mean = 5, sd = 1, n = 500

Z = (5.3 - 5) ÷ (1/√500) = 0.3 ÷ 0.045 = 6.67

Using the normal distribution table, for a one tailed test at 0.01 significance level, the critical value is 2.326

Conclusion:

Since 6.67 is greater than 2.326, reject the null hypothesis (H0)

4 0

3 years ago

Please help and explain I'll give u 12pts

White raven [17]

-7x² + 70x - 175

= -7(x² - 10x + 25)

= -7(x - 5)²

= -7(x + -5)²

Answer: -5

7 0

3 years ago

7) To determine how many pages would be need to make 3

ivanzaharov [21]

Answer:

368

Step-by-step explanation:

8*46

7 0

3 years ago

8x – 10 = 3x – 10 + 7x

stira [4]

Answer:

x= 0

Step-by-step explanation:

Let's first simplify the equation to make the PEMDAS process easier.

8x-10=3x-10+7x

8x-10=10x-10

Now lets start the subtracting and dividing process.

8x=10x

0=2x

0=x

6 0

3 years ago

Help me find the slope of this imagine. it a quizizz question and i cant figure it out

lidiya [134]

Answer:

slope = $\frac{5}{2}$

Step-by-step explanation:

Select any 2 ordered pairs from the given table, the use the slope formula to calculate the slope m

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (2, 5) and (x₂, y₂ ) = (4, 10) ← 2 ordered pairs from table

m = $\frac{10-5}{4-2}$ = $\frac{5}{2}$

5 0

3 years ago