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grandymaker [24]
2 years ago
14

Help mehh plz

Mathematics
1 answer:
Lelechka [254]2 years ago
4 0

9514 1404 393

Answer:

  28 cm

Step-by-step explanation:

For the similar figures, a proportion can relate the side lengths.

  x/(7 cm) = 11.2/2.8

  x = (7cm)(11.2/2.8) = 28 cm

The value of x is 28 cm.

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What is the slope of the line 4x+7y=9
Rashid [163]

Answer:

y= - frac4/7 x + frac9/7

Step-by-step explanation:

7 0
3 years ago
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Please help. Will give brainliest.
evablogger [386]
Alright, so you have the basic formula- good.
You have the A value (400), the interest rate r (7.5% -> .075 in decimal), and the final P value (8500). So, we only need to solve for t.

8500 = (400)(1+.075)^t
/400      /400
21.25 = 1.075^t
logarithms are the inverse of exponents, basically, if you have an example like
y = b^x, then a logarithm inverts it, logy(baseb)=x
Makes sense if you consider a power of ten.
1000 = 10^3
if you put logbase10(1000), you'll get 3.
Anyways, though, to solve the problem make a log with a base of 1.075 in your calculator
log21.25(base 1.075) = t
also, because of rules of change of base (might want to look this up to clarify), you can write this as log(21.25)/log(1.075) = t
Thus, t is 42.26118551.
Rounded to hundredths, t=42.26
6 0
3 years ago
Simplify x^3y^4/3y^4
yan [13]
The given expression is:
(x^3 * y^4) / (3y^4)

We can notice that the term y^4 is a common term found in both the numerator and the denominator of the given expression, therefore, we can cancel this term from the both numerator and denominator (as if you divided both numerator and denominator by y^4).

Doing this, we will have the simplified form of the expression as follows:
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4 0
3 years ago
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denis-greek [22]
-6.4 – 4(-2.8)
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tia_tia [17]

Answer:

1.955

Step-by-step explanation:

$31.28 ÷ 16 = 1.955

5 0
2 years ago
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