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bezimeni [28]
3 years ago
9

Write an expression that is equivalent to z + z + z+ z. Enter your answer in the space provided.

Mathematics
2 answers:
Setler [38]3 years ago
7 0

Answer:

4z

Step-by-step explanation:

brainliest please

makkiz [27]3 years ago
4 0

z+z+z+z

=4z

Hope it will help u...

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Help now plz i need it u are the best help now!
Oduvanchick [21]
#4.)
1/4 + 3/8 + 1/2 + 5/8 + 3/4
4 0
3 years ago
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In planning her​ retirement, Liza deposits some money at 3.5​% ​interest, with twice as much deposited at 4.5​%. Find the amount
KATRIN_1 [288]

a = amount deposited at 3.5%

b = amount deposited at 4.5%

we know that "b" is twice as much as "a", thus b = 2a.

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{3.5\% of a}}{\left( \cfrac{3.5}{100} \right)a}\implies 0.035a \\\\[-0.35em] ~\dotfill\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{4.5\% of 2a}}{\left( \cfrac{4.5}{100} \right)2a}\implies 0.045(2a)

we also know that whatever "a" amount is, their sum is 2250, thus

0.035a+0.045(2a) = 2250\implies 0.035a+0.09a=2250\implies 0.125a=2250 \\\\\\ a=\cfrac{2250}{0.125}\implies \boxed{a=18000}~\hspace{10em}\boxed{\stackrel{2a}{b=36000}}

5 0
2 years ago
If Laura bikes x miles to and from her friend's house each day, what expression can be used to calculate the total distance she
OLga [1]

Answer:

7x

Step-by-step explanation:

This is because x represents how many miles she rides each day, so you need to multiply x by the 7 days in a week

8 0
3 years ago
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Which statements are true of the function f(x) = 3(2.5)x? Check all that apply.
V125BC [204]

Answer:

The domain of the function is all real numbers.

7 0
3 years ago
Is my anwser correct or no if no plz explian why
igomit [66]
Where’s your answer, I can’t answer that question without the question.
8 0
3 years ago
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