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Leokris [45]
3 years ago
11

PLEASE ANSWER QUICKLY

Mathematics
2 answers:
GaryK [48]3 years ago
8 0
We have that
<span>1/4 x + 2/3 y = 5 ----> multiply by 12 both sides---> 3x+8y=60
1/2 x + 3/2 y = 11---> multiply by 2 both sides----> x+3y=22

therefore

the answer is the option
</span><span>B. 3x + 8y = 60 ; x + 3y = 22</span>
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

first one!

Step-by-step explanation:

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Earning of over 150,000 are taxed at a rate of 45%. Last year, Megan earned 158,900 before tax. How much did she pay in total
Dmitriy789 [7]

Answer:

Megan paid $71,505 in total.

Step-by-step explanation:

As the information states that earnings of over 150,000 are taxed at a rate of 45%, to be able to find the amount Megan paid, you have to calculate the 45% of the amount she earned:

158,900*45%=71,505

According to this, the answer is that Megan paid $71,505 in total.

8 0
3 years ago
Write an exponential function in the form y=ab^x that goes through points (0,12) and (3,6144)
skad [1K]

Given:

An exponential function goes through points (0,12) and (3,6144).

To find:

The exponential function.

Solution:

The general exponential function is:

y=ab^x           ...(i)

The function goes through point (0,12). Substituting x=0,y=12, we get

12=ab^0

12=a

The function goes through point (3,6144). Substituting a=12, x=3,y=6144 in the general exponential function, we get

6144=12b^3

\dfrac{6144}{12}=b^3

512=b^3

512^{\frac{1}{3}}=b

8=b

Putting a=12,b=8 in (i), we get

y=12(8)^x

Therefore, the required exponential function is y=12(8)^x.

3 0
3 years ago
Evaluate 6(5-(6-5)-3​
IrinaK [193]

Answer:

Step-by-step explanation:

Evaluate 6(5-(6-5)-3​) =  6(5-1-3​)   {first solve innermost bracket}

                               = 6* (5-4) = 6*1 =6

4 0
3 years ago
Read 2 more answers
A number b divided by -3 is greater than or equal to 6
enot [183]

Answer:

\frac{b}{-3}\geq 6\\\\ b\leq 6.(-3)=-18\\\\ b\leq -18

Step-by-step explanation:

6 0
3 years ago
Ab=45 mm,bc=10cm 4mm ,cd = 5 cm 6 mm ,de= 35 mm,ea=x cm, and the perimeter of irregular pentagon is 280 mm. Find the length of t
DaniilM [7]

Answer:

The length of the unknown side x is 4 cm

Step-by-step explanation:

we know that

The perimeter of a polygon is equal to the sum of its length sides

Remember that

1 cm=10 mm

In this problem we have

AB=45 mm ------> convert to cm -----> AB=45/10=4.5 cm

BC=10 cm 4 mm -----> convert to cm -----> BC=10+4/10=10.4 cm

CD=5 cm 6 mm  -----> convert to cm -----> CD=5+6/10=5.6 cm

DE=35 mm ------> convert to cm -----> DE=35/10=3.5 cm

EA=x cm

P=280 mm ------> convert to cm -----> P=280/10=28 cm

The perimeter of the irregular polygon is equal to

P=AB+BC+CD+DE+EA

substitute the values

28=4.5+10.4+5.6+3.5+x

28=24+x

x=28-24

x=4 cm

3 0
3 years ago
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