3 years ago

Pls answer question 9

Mathematics

1 answer:

aliina [53]3 years ago

4 0

The awnser is number b

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Find the points of intersection (if any) of the graphs of the equations. Use a graphing utility to check your results. y = - x +

fredd [130]

Answer:

$x = 1.2$

See Attachment for Graph

Step-by-step explanation:

Given

$y = -x + 4$

$y = 4x - 2$

Required

Determine the point of intersection

To do this, we simply equate both expressions of y

i.e.

$-x + 4 = 4x - 2$

Solve for x

$-x - 4x = - 2 - 4$

$-5x = -6$

Divide through by -5

$x = \frac{-6}{-5}$

$x = \frac{6}{5}$

$x = 1.2$

Hence, the point of intersection is 1.2

7 0

2 years ago

Help pls me , help pls

OLga [1]

115=25+21x or 115=21x-25

8 0

2 years ago

Which of the following can cause a communicable disease

velikii [3]

What does "the following" mean ?

Where are the choices ?

8 0

3 years ago

If there are 350 boys in a school with a total of 800 students, then what percent of the students are girls?

tester [92]

Answer:

56.25%

Step-by-step explanation:

800 - 350 = 450

1% of 800 = 8 (800 divided by 100)

450 divided by 8 = 56.25

4 0

2 years ago

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Prove that the difference between a two-digit number and the product of its digits will always be a 2 digit number.

slamgirl [31]

Step-by-step explanation:

Let the two-digit number is $xy$

This can be written as:

10x + y, where 1 ≤ x ≤ 9 and 0 ≤ y ≤ 9

The difference between the number and product of its digits is:

d = 10x + y - xy

Rewrite this as below:

d = 10x - xy + y - 10 + 10 =

x(10 - y) - (10 - y) + 10 =

(x - 1)(10 - y) + 10

We see that:

0 ≤ x - 1 ≤ 8 according to the condition given above
1 ≤ 10 - y ≤ 10 again according to the condition given above

The value of d is then:

0 + 10 ≤ d ≤ 8*10 + 10
10 ≤ d ≤ 90

<h3>Proved</h3>

7 0

2 years ago

Read 2 more answers