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3 years ago

X2+4x+3 can someone explain ?

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

8 0

Answer:

Factor: (x+1) (x+3)

Step-by-step explanation:

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How do you answer the equation -4r+11=4(1-r)+7?

kow [346]

Answer:

Any value of

makes the equation true.

All real numbers

Interval Notation:

(-Any value of

makes the equation true.

All real numbers

Interval Notation:

( ∞ ,∞ )

Step-by-step explanation:

3 0

3 years ago

10. What is the value of the function f(x) = 7x when x = 0.75 ?

melomori [17]

Answer:

7(0.75) = 5.25

f = 7

Step-by-step explanation:

7 0

2 years ago

Jack has 20 more stamps than Dylan has. Together they have 46 stamps. Find the number of stamps each has

Pachacha [2.7K]

Answer:

The number of Jack's stamps is 33 and Dylan's stamps is 13

Step-by-step explanation:

Let

x -----> the number of Jack's stamps

y -----> the number of Dylan's stamps

we know that

x+y=46 ----> equation A

x=y+20 -----> equation B

Solve by substitution

substitute equation B in equation A and solve for y

(y+20)+y=46

2y=46-20

2y=26

y=13 stamps

Fond the value of x

x=y+20 -----> x=13+20=33 stamps

therefore

The number of Jack's stamps is 33 and Dylan's stamps is 13

3 0

3 years ago

Read 2 more answers

For the triangles ABC and MNP m∠A = m∠M, AB = 16, AC = 10, MN = 7, MP = 24. Find the ratio of the A△MNP and A△ABC .

Digiron [165]

Answer:

Ratio of area of triangles MNP and ABC is 1.05

Step-by-step explanation:

There are 2 triangles ABC and MNP.

We are given that ,m∠A = m∠M.

AB = 16 and AC = 10.

MN = 7 and MP = 24.

Area of a triangle ∝ Product of any two sides.

So area of triangle ABC ∝ 16 $\times 10$

Area of triangle ABC = 160 $\times k$ ,

where k is a constant.

So area of triangle MNP ∝ 7 $\times 24$

Area of triangle MNP = 168 $\times k$

So ratio of area of triangles = $\frac{Area of MNP}{Area of ABC}$

= $\frac{168}{160}$

= 1.05

3 0

3 years ago

Read 2 more answers

Two math questions plz

lord [1]

we know that

<u>The correlation coefficient</u> is a measure of linear association between two variables. Values of the correlation coefficient are always between −1 and +1.

Using a mathematical tool-------> Excel software

Find the correlation coefficient

see the attached table N 1 and N 2

the answer is

Part 1) The correlation coefficient of the data is 0.02

Part 2) The correlation coefficient of the data is 0.98

3 0

3 years ago