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
nikklg [1K]
3 years ago
15

Can someone please explain this and Answer it

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
6 0
71
first, subtract 1 from 10 which is 9
then multiply 9 and 7 which gives you 63
now, add 63 and 8
that brings you to your answer, 71 :)
Gwar [14]3 years ago
4 0

Answer:

71

Step-by-step explanation:

pemdas -> parentheses, exponents, multiplication, division, addition, and subtraction

you have to do those in order

first parentheses so (10-1) = (9)

(you keep the parentheses)

then no exponents so multiplication

7*(9) = 63

lastly addition

8+63

You might be interested in
What must be added to 3x -7 to make x 2 + 4x -1?
Elanso [62]
There is the answer!

6 0
3 years ago
A motorboat takes 3 hours to travel 108 km going upstream. The return trip takes 2 hours going downstream. What is the rate of t
PtichkaEL [24]
Recall your d = rt, distance = rate * time.

let's say the boat has a still water rate of "b", and the current has a a rate of "c", ok.... when the boat is going upstream, is not really going "b" fast, is going  slower at "b - c", due to the current going in the opposite direction.

when the boat is coming downstream, is not going "b" fast either, is going faster, is going "b + c", due to the current adding speed to it.

we know the trip up was 108 kms, thus the return trip is also 108 kms.

\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
Upstream&108&b-c&3\\
Downstream&108&b+c&2
\end{array}
\\\\\\
\begin{cases}
108=3(b-c)\implies \cfrac{108}{3}=b-c\implies 36+c=\boxed{b}\\\\
108=2(b+c)\\
--------------------\\
108=2\left(\boxed{36+c} +c \right)
\end{cases}
\\\\\\
\cfrac{108}{2}=36+2c\implies 54=36-2c\implies \cfrac{54-36}{2}=c

and surely you know how much that is.

what's the boat's speed? well, 36 + c = b.
8 0
3 years ago
Solve each proportion 3 = 72 – 7​
Vanyuwa [196]
1. 504=3x
x=168

2. 64=20m
m=3.2
4 0
2 years ago
What 34 divided by 20196
Komok [63]

Answer:

0.00168350168

4 0
3 years ago
Find the integer that makes this subtraction statement true -3 - ? = -5
Elenna [48]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{2}}}}}

Step-by-step explanation:

Let the missing integer be x

Solve for x

\sf{ - 3 - x =  - 5}

Move 3 to right hand side and change it's sign

\dashrightarrow{ \sf{ - x =  - 5 + 3}}

The negative and positive integers are always subtracted but posses the sign of the bigger integer

\dashrightarrow{ \sf{ - x =  - 2}}

Change the signs of both sides

\dashrightarrow{ \boxed{ \sf{x = 2}}}

Hope I helped!

Best regards! :D

7 0
4 years ago
Other questions:
  • Find the proportion of the data that must lie in (M-8σ, M+8σ) when M=7.013 and σ=3.125.
    11·1 answer
  • Find the are of a circle with radius of 9m
    15·1 answer
  • A grocery, a cafe, a boutique, and a dance studio have the addresses 500 Elm, 524 Elm, 538 Elm, and 544 Elm, but not necessarily
    14·2 answers
  • What type of transformations occurred to Triangle ABC?
    8·2 answers
  • PLZ HELP ASAP 30 POINTS !!!! Which is a zero of the quadratic function f(x) = 9x2 – 54x – 19?
    7·1 answer
  • Is 5 a solution to -3x=15
    6·2 answers
  • If ABCDE is reflected over the x-axis and then translated 3 units left, what are
    13·1 answer
  • Identify all pairs of lines that appear to be perpendicular. Select all that apply
    8·1 answer
  • I need help on this <br> Here it is
    5·1 answer
  • 6. GO DEEPER Wayne's gym locker is a rectangular prism with a width and height of 14 1/2inches.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!