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jok3333 [9.3K]
3 years ago
15

PLEASE HELP! QUIZ QUESTION

Mathematics
2 answers:
Assoli18 [71]3 years ago
5 0

Answer:

30 i think because 3x is 90

sveticcg [70]3 years ago
4 0

Answer:

So from first seeing this, you see that there's a lot of linear pairs, and a few right angles. You can see that 3x is a right angle. I would start from there..?

Step-by-step explanation:

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Help please with some 7th grade math
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ANSWER: 3 walls

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3 years ago
PLEASE ANSWER I REALLY NEED HELP ON THIS TEST
marshall27 [118]

Answer:

A

Step-by-step explanation:

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6 0
3 years ago
The percentage of water in an unknown hydrate was determined by heating the sample and driving the water off the sample. Two ind
Bas_tet [7]

Answer:

It should be reported as 20.648%

Step-by-step explanation:

Since we have 2 different observed values hence we shall use an average of the 2 values to report the result

Thus value is \frac{19.564+21.731}{2}=20.6475%

As we can see that the least count of our observations is upto 3 decimal places hence we have to report a result upto only 3 decimal places thus we need to round off the fourth decimal place thus the digit shall be increased by 1 since we have to drop off 5 and the digit before 5 is 7 which is an odd number.

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8 0
4 years ago
A drink is made by mixing orange juice and lemonade in the ratio 1:4
Gnoma [55]

Answer:

Mark me as brain list plz

Step-by-step explanation:

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8 0
2 years ago
find an expression for the area of a rectangle of sides 2x+3 and x-1 given that the perimeter is 28cm what is the value of x
Ierofanga [76]

Answer:

4cm

Step-by-step explanation:

Given data

L=(2x+3)

W=(x-1)

P=28cm

A= L*W

A= (2x+3)*(x-1)

open bracket

A= 2x^2-2x+3x-3

collect like terms

A= 2x^2+x-3

P= 2L+2W

P= 2*(2x+3)+2(x-1)

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collect like terms

P= 6x-4

but p= 28

28= 6x-4

28-4= 6x

24= 6x

x= 24/6

x= 4cm

Hence x= 4cm

4 0
3 years ago
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