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dybincka [34]
3 years ago
5

BEST ANSWER GETS BRAINLIEST What is 20c + 8d +10c - 5d

Mathematics
2 answers:
lukranit [14]3 years ago
7 0
Combine like terms for 30c +3d
alukav5142 [94]3 years ago
5 0
30c+3d
What you do is combine like terms, so you combine to to C’s and then combine the to D variables. Once you do that, you get 30c+3d
Hope this helped:)
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If 6y-8=28, what is the value of y
quester [9]
The answer would be y = 6
8 0
4 years ago
Read 2 more answers
A submarine at a depth of -2 2/3 feet descended 5 1/2 feet. How many feet must the submarine rise to reach the surface? Explain
vladimir2022 [97]

Original position of the submarine below the Surface = -2 2/3= -8/3

Submarine at a depth of -2 2/3 feet descended by 5 1/2 feet.

So new position of the Submarine = \frac{-8}{3}-\frac{11}{2}\\\\  = \frac {-16 - 33}{2}\\\\  = \frac{-49}{6}

To Reach the surface submarine must rise = 0-(-49/6)

As seen from the equation the two negative sign [(-)(-)] will change into a positive sign.

At the surface the position of the submarine = +49/6 feet

5 0
3 years ago
PLEASE HELP WILL GIVE BRAINLY!!!!!!!
WITCHER [35]

Answer:

q = -5\sqrt{5}

q = 5\sqrt{5}

Step-by-step explanation:

Since there is no constant value. This must be a special case.

So,

(q+5\sqrt{5})(q-5\sqrt{5})

q = -5\sqrt{5}

q = 5\sqrt{5}

8 0
3 years ago
Read 2 more answers
Henry wrote 4z2 - 22 as<br> 4. Are 4z2 – 22 and 4 equivalent expressions?<br> Explain.
lesantik [10]
If the q is: are 4z2-22 and 4 equivalent expressions, the answer is No.
4z2-22=4
8z-22 is not equal to 4
If you are looking for value of z, then:
8z-22=4
8z=4+22
8z=26
z=26/8
z=13/4
In case in which z=13/4, than expression
4z2-22 would be equivalent to 4.
Hope this helped.
4 0
3 years ago
You measure the mass of a book and it’s 420.0890g how many significant digits are in the measurement
Andrew [12]

9514 1404 393

Answer:

  7

Step-by-step explanation:

All of the digits in the given number are significant. There are 7 significant digits.

__

<em>Comment on other cases</em>

When there are non-zero digits to the left of the decimal point in a number with a decimal point, all of the digits are significant.

When there are no non-zero digits to the left of the decimal point, leading zeros are not significant. All digits following the leading zeros are significant.

In a number with no decimal point, the leading and trailing zeros are not significant.

If the number is written in scientific notation, all digits of the mantissa are significant. (This can be a way to ensure the correct number of significant digits is known in a number with trailing zeros.)

5 0
3 years ago
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