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2 years ago

Find y-intercept for y= (x+2)(x-5)

Mathematics

2 answers:

jeka942 years ago

8 0

Answer:

I you added them to gether

Ber [7]2 years ago

3 0

Y=x^2 -3x -10

Is it answer

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How do you write the number 5.843 × 1010 in standard form?

aliina [53]

The standard form will be the first one,

58,430,000,000

The power 10 shows us that we have to move the decimal place to the write, 10 places.

4 0

4 years ago

If x = 3 and y = -2, what is the value of the expression x^3-2xy^2?

Nana76 [90]

Answer:

Step-by-step explanation:

The expression is $x^3-2xy^2$ . To find the value, substitute the values x = 3 and y =-2 then follow order of operations.

$x^3-2xy^2\\3^3 -2(3)(-2)^2\\27 -2(3)(4)\\27 - 24\\3$

7 0

3 years ago

The width of the rectangle

Nikolay [14]

Answer:

84cm^2

Step-by-step explanation:

P=2l+2w

We are given,

P=40cm

l=2w+2

Plug these into the first formula and solve for the dimensions,

length and width, of the rectangle:

40=2(2w+2)+2w Simplify

40=4w+4+2w

40=6w+4

36=6w

6=w OR the width is 6cm, therefore,

the length is

l=2(6)+2

l=14cm

To calculate the area of a rectangle, A=lw,

plug the length,14cm, and the width, 6cm, into this formula

A=(14)(6)

A=84cm2 OR the area of the rectangle is 84cm^2

7 0

3 years ago

All real numbers that are less than -3 or greater than or equal to 5

kvasek [131]

Just exactly the way you've worded the question, there aren't any.

5 0

4 years ago

Last year, 46% of business owners gave a holiday gift to their employees. A survey of business owners indicated that 20% plan to

alisha [4.7K]

Answer:

Part a: So the number of business owners giving holiday gift to their employees from survey is 12.

Part b: p-value is 0.00003

Part c: value of p is less that a we reject the null hypothesis.

Step-by-step explanation:

Part a

number of business owners=20% x n

number of business owners= 0.2x 60

number of business owners=12

Part b

H0: p=0.46

H1: p<0.46

Here

n=60, $\hat{p}$ =0.2, p=0.46

So test statistics is given as

$z=\frac{\hat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}\\z=\frac{0.20-0.46}{\sqrt{\frac{0.46(1-0.46)}{60}}}\\z=\frac{-0.26}{0.064}\\z=-4.04$

p-value is P(z<-4.04)= 0.00003

Part c

As value of p is less that a we reject the null hypothesis.

4 0

4 years ago