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Lera25 [3.4K]
4 years ago
7

Solve for x.

x}{40}" align="absmiddle" class="latex-formula"> = 4

A) 16
B) 36
C) 160
D) 176
Mathematics
2 answers:
Rom4ik [11]4 years ago
6 0

Answer:

The answer is C.

Step-by-step explanation:

In order to find x, you have to multiply both sides by 40 :

\frac{x}{40}  = 4

\frac{x}{40}  \times 40 = 4 \times 40

x = 160

alexandr1967 [171]4 years ago
4 0
The answer is C) 160 because 160 divided by 40 equals 4
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Answer:

The amount she started with $20

Step-by-step explanation:

Let the amount Ahmya started with = x

when she bought $10 shirt, the remaining money is = x - 10

she spent half of this remaining money on dinner = (\frac{x- 10}{2} )

amount left after this = (\frac{x- 10}{2} )

she further spent $4 on cofee, the remaining money = (\frac{x- 10}{2} ) - 4

she also spent 1/4 of remaining money on souveniers = \frac{1}{4}(\frac{x-10}{2}  - 4)

amount left = \frac{3}{4}(\frac{x-10}{2}  - 4)

The two last fractions should sum up to 1;

\frac{1}{4}(\frac{x-10}{2}  - 4) + \frac{3}{4}(\frac{x-10}{2}  - 4) = 1\\\\\frac{x-10}{8} -1 + \frac{3x-30}{8} -3= 1\\\\\frac{x-10}{8} + \frac{3x-30}{8} = 1+3+1\\\\\frac{x-10}{8} + \frac{3x-30}{8} =  5\\\\\frac{x-10 +3x-30}{8}  = 5\\\\\frac{4x-40}{8} =5\\\\4x-40 =40\\\\4x =80\\\\x = 20

x = $20

Therefore, the amount she started with $20

7 0
3 years ago
A student answered 56 problems on a test correctly and received a grade of 80%. How many (total) problems were on the test if al
marta [7]

Answer:

98% is almost 100%, so we can see that the number of problems on the test can only be 1 or 2 more than 86.

The number of problems on the test is 87

Step-by-step explanation:

7 0
3 years ago
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Please help me solve this!!!
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2A = bh

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\boxed{\frac{2A}{h} = b}
8 0
3 years ago
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I'll do this step-by-step. Note, ratios are basically division signs.

The ratio of cars to motorcycles in a parking lot is 10:3, which means there are 10 cars for every 3 motorcycles.

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If you don't want the explanation, there are 33 more cars than vans in the parking lot.
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3 years ago
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Micah found the least common multiple of 8 and 12. His work is shown below.
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Answer:

Micah selected a multiple that is not the least of the common multiples.

Step-by-step explanation:

12 is not the lowest multiple of 12 , 24 is the lowest common multiple

8 0
3 years ago
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