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andreyandreev [35.5K]
2 years ago
10

Mary said, "Four times my age reduced by thirty is six. How old am I?

Mathematics
1 answer:
skelet666 [1.2K]2 years ago
6 0

Answer:

9

Step-by-step explanation:

I said so

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PLEASE HELP ME with this
riadik2000 [5.3K]

Answer:

22 1/4

Step-by-step explanation:

6 0
3 years ago
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What is an equivalent ratio ? Real world example
arsen [322]
A ratio is used to describe how two or more quantities are related. For example, we might say that a fruit drink calls for sugar crystals to be mixed with water in a ratio of 2:6. This means that for every 2 scoops sugar crystals, there will need to be 6 ounces of water. If there were 200 scoops of sugar crystals, there would need to be 600 ounces of water.
3 0
2 years ago
Suppose a family has a gross annual income of ​$39,600.
Natalka [10]
According to financial advisers,
<span>* mortgage payment should be at most </span><span>28% of your gross monthly income
</span><span>* total monthly debt should be at most </span><span>36% of your gross monthly income.  Total monthly debts include </span><span>mortgage payments, car payments, credit card bills, student loans, and medical debt.\</span>

<span>gross annual income: 39,600</span>

gross monthly income: 39,600 / 12 = 3,300

a) maximum amount for monthly mortgage payment: 3,300 x 28% = 924

b) maximum amount for total credit obligations: 3,300 x 36% = 1,188

c) mortgage: 924 x 70% = 646.80 actual mortgage

1,188 - 646.80 = 541.20 maximum amount they could spend each month for all other debts.

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</span>

<span>
</span>

8 0
3 years ago
Find the average rate of change of each function over the interval [0, 2]. Match each representation with its respective average
marishachu [46]
Average rate of change over interval [a,b]: r=[f(b)-f(a)]/(b-a)
In this case the interval is [0,2], then a=0, b=2
r=[f(2)-f(0)]/(2-0)
r=[f(2)-f(0)]/2

1) First function: h(x)
r=[h(2)-h(0)]/2
x=2→h(2)=(2)^2+2(2)-6
h(2)=4+4-6
h(2)=2
x=0→h(0)=(0)^2+2(0)-6
h(0)=0+0-6
h(0)=-6
r=[h(2)-h(0)]/2
r=[2-(-6)]/2
r=(2+6)/2
r=(8)/2
r=4

2) Second function: f(x)
A function, f, has an
x-intercept at (2,0)→x=2, f(2)=0
and a y-intercept at (0,-10)→x=0, f(0)=-10
r=[f(2)-f(0)]/2
r=[0-(-10)]/2
r=(0+10)/2
r=(10)/2
r=5

3) Third function: g(x)
r=[g(2)-g(0)]/2
From the graph:
g(2)=6
g(0)=2
r=(6-2)/2
r=(4)/2
r=2

4) Fourth function: j(x)
r=[j(2)-j(0)]/2
From the table:
x=2→j(2)=-8
x=0→j(0)=4
r=(-8-4)/2
r=(-12)/2
r=-6

Answer:
Pairs
1) h(x)     4
2) f(x)      5
3) g(x)     2
4) j(x)     -6
8 0
3 years ago
Simplify the expression.<br> (2x)(3x)
Maksim231197 [3]

Answer:

6x²

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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