All categories

3 years ago

Anyone help please I’m wasting my points for no reason

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

8 0

Answer:

Qn1: -37

Qn2: 16

Qn3:-33.6

Step-by-step explanation:

Qn1:

k(4) = -4*4-6 = -16-6 = -22

m(5) = (5^2)-8*5=-15

k(4)+m(5)= -22+ (-15)= -37

Qn2:

m(-2)= 4 -8*(-2)= 20

n(10) = 2 -6 = -4

20+ (-4)=16

Qn3:

n(-100)= -20-6 = -26

k(-8) = -1.6 -6= -7.6

-26+ (-7.6) = -33.6

You might be interested in

The area of triangle ABC is 31 - square centimeters. What is the measure of side b?

kramer

102 cm is the answer

5 0

4 years ago

You get paid $7.25 per hour for doing yard work. You earned $79.75 last week. Which equation shows how to calculate the numbers

svlad2 [7]

79.75/7.25
Or 7.25x = 79.75.

3 0

4 years ago

Read 2 more answers

Brandon rode in a taxi that charges a flat fee of $2.25 and an additional $0.40 per mile of his trip. If he paid $6.80 for the c

r-ruslan [8.4K]

Answer:

11 $\frac{3}{8}$ miles.

Step-by-step explanation:

To find how many miles Brandon rode, we can create an equation in slope-intercept form: y = mx + b

$2.25 is the flat fee, or the unchanging variable. This is our y-intercept, or b.

$0.40 is the changing variable, as it changes value depending on the amount of miles ridden. This is our slope, or m.

We know Brandon spent $6.80 on the cab ride. So, this is our y.

We get the equation: 6.80 = 0.40x + 2.25.

To solve, first subtract 2.25 from both sides of the equation:

6.80 - 2.25 = 0.40x + 2.25 - 2.25

We get: 4.55 = 0.40x

Now, just divide by 0.40 on both sides:

4.55 ÷ 0.40 = 0.40x ÷ 0.40

We get: 11.375 = x

So, Brandon rode for 11.375 miles. When converted to a mixed number, we get 11 $\frac{3}{8}$ .

I would appreciate brainliest, if not that's ok!

6 0

3 years ago

Bob can chop down 10 trees in 30 minutes, while Frank can chop down 15 trees in 30 minutes. Working together, how long will it t

Readme [11.4K]

It will take 120 minutes to chop down 100 trees.

Bob chops 10 trees in 30 minutes, so he can chop 100 trees in 300 minutes.

Frank chops 15 trees in 30 minutes, so he can chop 100 trees in 200 minutes.

Solve this using the following equation:

15 / 30 = 100 / x

Solving for x gives 120 minutes.

The unitary approach is a way of solving a hassle via first locating the price of a single unit, after which locating the necessary cost with the aid of multiplying the single unit fee.

The formula of the unitary approach is to find the cost of a single unit after which multiply the cost of an unmarried unit via the quantity of units to get the important price.

Learn more about the unitary approach here brainly.com/question/23423168

#SPJ4

8 0

2 years ago

Can someone please help me this this??

Brrunno [24]

Answers:

bio = 258

sociology = 169

============================================================

Work Shown:

x = number of bio textbooks

y = number of sociology textbooks

x+y = 427 books sold total

y = x-89 since 89 less sociology textbooks were sold compared to bio

Apply substitution to get the following

x+y = 427

x+x-89 = 427 ... replace y with x-89

2x-89 = 427

2x = 427+89

2x = 516

x = 516/2

x = 258 bio textbooks were sold

y = x-89

y = 258-89

y = 169 sociology textbooks were sold

5 0

2 years ago