1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olenka [21]
3 years ago
6

How do you solve this equation 7(3)+(-9)×(-4)=

Mathematics
1 answer:
Softa [21]3 years ago
7 0

Hello!

To solve this equation, we will need to use PEMDAS (parentheses, then exponents, then multiplication/division, then addition/subtraction).

7(3) + (-9) x (-4) =

21 + (-9) x (-4) =

21 + 36 =

57

I hope this helps you! Have a lovely day!

- Mal

You might be interested in
Please help with 6 and 7
Ilya [14]

Answer:

6. The number is -5

7. The two numbers are 10 and 11

Step-by-step explanation:

Question six can be re-worded to create the following expression:

-2=\frac{4x+10}{5}

Solve for x to find the number:

-2=\frac{4x+10}{5}\\-10=4x+10\\-20=4x\\\frac{-20}{4} = x\\-5 = x

Question seven can be solved by first listing the constraints (assuming x is smaller than y):

  1. x and y are less than 20
  2. x + 1 = y
  3. 3x - 8 = 2y

To get the numbers, we can create a system of linear equations. First, solve for y in each expression:

y = x+1

2y = 3x-8\\y = \frac{3}{2}x - 4

Solve for x:

x+ 1 = \frac{3}{2}x - 4\\x + 5 = \frac{3}{2}x\\5 = \frac{3}{2}x - x\\5 = \frac{1}{2}x\\10 = x

Solve for y:

y = x + 1\\y = 10 + 1\\y= 11

4 0
1 year ago
Read 2 more answers
After slowing down, the dragons could fall behind on their journey. What do the dragons need to do in order to ensure that their
liberstina [14]
The dragons would have to speed up to balance out the time that they slowed down.

The instantaneous rates of changes are all the individual speeds at given times. If you have some that are slow, you will need to have just as many that are fast to balance it out and ensure they have the correct average speed.
6 0
2 years ago
How are fractions divided the right way?
Lady_Fox [76]

You would keep the first fraction the same , turn the division sign into a multiplication sign , and flip the 2nd fraction upside down.


10/14 ÷ 7/16


10/14 x 16/7= 80/49 = 1 31/49

8 0
2 years ago
if you deposit 4500 at 5% annual interest compounded annually how much money will be in the account after 30 months
Alja [10]

Answer:

A = $ 50,978.44

Step-by-step explanation:

First, convert R percent to r a decimal

r = R/100

r = 5%/100

r = 0.05 per year,

Then, solve our equation for A

A = P(1 + r/n)nt

A = 45,000.00(1 + 0.004166667/12)(12)(2.5)

A = $ 50,978.44

8 0
3 years ago
Sofia is learning to knit. After her first three stitches, she had to undo the last two. Then she made three more stitches and a
Marizza181 [45]
She’ll have to make 4 more stitches in order to get 6 good ones. Each time she creates 3 she undoes 2 which after 4 more times would leave her with 6 good stitches.
4 0
2 years ago
Other questions:
  • Find the indicated limit, if it exists.
    13·1 answer
  • Ian, Tyrone, Sergio and Larry have all been invited to a dinner party. They arrive randomly and each person arrives at a differe
    9·1 answer
  • About 34% of people are expected to be infected by the flu this season. What is the risk that a randomly selected person will be
    15·1 answer
  • A cylinder has a volume of 315 pi cubic meters and a height of 21 meters. What is the area of the base? 15 pi square meters 18 p
    11·2 answers
  • the remains of an ancient ball court include a rectangular playing alley with a perimeter of about 64 M. the length of the alley
    11·1 answer
  • A rectangle has coordinates A(-4?4), B(0,0), C(6,8), and D(2,11) what is the area of the rectangle
    8·1 answer
  • Find the inverse of the following function.
    7·1 answer
  • What is a reflection of a geometric shape
    8·1 answer
  • Which equations represent the line that is parallel to 3x – 4y = 7 and passes through the point (-4,-2)? Select two
    6·1 answer
  • (2i)/(3-5i) HELP ASAP --- algebra 2 question
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!