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lorasvet [3.4K]
3 years ago
14

Please help me with these questions.

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
7 0
I agree with you!!!!!!!!
bija089 [108]3 years ago
5 0
Red to free 3:2
3/35 2/x cross multiply
3x=70
Solve
23.33 green apples


11. 18 students
72=.8x
x=90
90*.2=18
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Heather has divided ​$5400 between two​ investments, one paying 8​%, the other paying 5​%. if the return on her investment is ​$
Phantasy [73]

Answer:

$2500 at 8%.

$2900 st 5%.

Step-by-step explanation:

Let x be the amount invested at rate of 8% and y be the amount invested at the rate of 5%.

We have been given that Heather has divided ​$5400 between two​ investments. We can represent this information as:

x+y=5400...(1)

The return on her investment is ​$345.  

Earnings from the investment at 8% will be 8% of x.

Earnings from the investment at 5% will be 5% of y.

(\frac{8}{100})x+(\frac{5}{100})y=345...(2)

0.08x+0.05y=345...(2)

We will use substitution method to solve our system of equations. From equation (1) we will get,

x=5400-y

Substituting this value in equation (2) we will get,

0.08(5400-y)+0.05y=345

432-0.08y+0.05y=345

-0.08y+0.05y=345-432

-0.03y=-87

\frac{-0.03y}{-0.03}=\frac{-87}{-0.03}

y=2900  

Therefore, Heather has invested an amount of $2900 at 5%.

Let us substitute y=2900 in equation (1) to solve for x.

x+2900=5400

x+2900-2900=5400-2900

x=2500

Therefore, Heather has invested an amount of $2500 at 8%.

6 0
3 years ago
Sierra has 3 feet of ribbon to make bows for friends.She uses 1/5 of a foot of ribbon for each bow. She think she can make more
lubasha [3.4K]

Agree with the girl making the bows because to make three bows all you need is 3/5 feet of ribbon, which isn’t even a full foot

6 0
3 years ago
Read 2 more answers
Need help ASAP
iragen [17]

Answer:

75

Step-by-step explanation:

8 0
2 years ago
Given f(x)=2x2+3x and g(x)=5x2−2x−6 .
ivolga24 [154]
7x2+x-6 is the correct answer
8 0
3 years ago
Read 2 more answers
HELP ME PLEASEEEEEE ASAP I REPEAT HELPPP
tensa zangetsu [6.8K]

Answer:

b

Step-by-step explanation:

denominator(5) stays the same

multiply 2 by 4 since that is 1 fourth of an hour.

So now its 8/5

5 goes into 8 1 time with 3 leftover

So the 1 is a whole number now

the leftover fraction 3/5

=1  3/5

4 0
3 years ago
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