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
alukav5142 [94]
3 years ago
9

An expression is shown below.

Mathematics
2 answers:
worty [1.4K]3 years ago
6 0
B. Since she earned 35 (+35), spent 15 (-15), bought a book for $7 (-7) and got 10 dollars from mom (+10)
kondaur [170]3 years ago
5 0
It’s B!
whenever a word problem mentions someone spending money that is subtraction and rewards or gifts are addition :)
You might be interested in
The population of a species of rabbit triples every year. This can be modeled by f(x) = 4(3)x and f(5) = 972. What does the 972
Alona [7]
972 represent the total population of the rabbits after five yours. 
Answer: B
5 0
3 years ago
Read 2 more answers
Which is smaller 1/6 or 1/5
erma4kov [3.2K]
1/6 because you are breaking something into 6 and you got to share think of it like that so you get a smaller piece than you cutting it into 1/5...... so the answer is 1/6
5 0
3 years ago
Read 2 more answers
Need help on this thank you
krok68 [10]

Answer:

a=7

Step-by-step explanation:

24^2+a^2=25^2

576+a^2=625

49=a^2

a=7

5 0
3 years ago
the vaal dam can store 2536 million m3 of water when full. However it was 65 4% full on the 30 January 2020 how many litres of w
PIT_PIT [208]

Answer:

Current water in dam = 1,676.202 million m³ (Approx.)

Step-by-step explanation:

Given:

Storage capacity of dam = 2,536 million m³

Current water level = 65.4%

Find:

Current water in dam

Computation:

Current water in dam = Storage capacity of dam x Current water level

Current water in dam = 2,563 x 65.4%

Current water in dam = 1,676.202 million m³ (Approx.)

5 0
3 years ago
10# A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like
ella [17]

ANSWER:

104

STEP-BY-STEP EXPLANATION:

Given:

Standard deviation (σ) = 700

Confidence level = 95%

Mean error (Eμ) = 135

We have for a confidence level of 95%:

\begin{gathered} \alpha=100\%-95\%=5\%=0.05 \\  \\ \alpha\text{/2}=\frac{0.05}{2}=0.025 \\  \\ \text{ The corresponding Z value for \alpha/2 = 0.025 is as follows:} \\  \\ Z_{\alpha\text{/2}}=1.96 \end{gathered}

Now, we calculate the minimum value of the sample size as follows:

\begin{gathered} n=\left(\frac{Z_{\alpha\text{/2}}\cdot\sigma}{E}\right)^2 \\  \\ \text{ We replacing:} \\  \\ \:n=\left(\frac{1.96\cdot 700}{135}\right)^2 \\  \\ \:n=103.2858\cong104 \end{gathered}

The minimum sample size needed is 104

3 0
1 year ago
Other questions:
  • Answer this question in the simplest
    13·2 answers
  • What is the domain of f(x)=√(x)?
    5·1 answer
  • Simplify.<br><br> 14.8 + 6.25 + 0.97
    8·2 answers
  • A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 6.6 pounds. A sample of seven i
    10·1 answer
  • Please help me with this one
    12·1 answer
  • Helpppppp please thank you
    8·2 answers
  • A coordinate of a figure is (0,5). What will be the new coordinate after a dilation with a scale factor of 1/3?
    6·2 answers
  • 10<br> 10<br> O A. (3,8)<br> B. (6,5)<br> O c. (5,6)<br> O D. (8,3)
    10·1 answer
  • Please help me I need help!!!
    5·1 answer
  • A bacteria culture doubles every 5 hours. Determine the hourly growth rate of the bacteria
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!