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pshichka [43]
3 years ago
12

10(2x+-15)= 40x=30 how do i solve this?

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

if you meant 40x-30 the answer is 9

Step-by-step explanation:

you have to distribute the 10x to 2x and 15

this gives you 20x+150=40x-30

then subtracted 20x from both sides and then add 30 to both sides

you should be left with 180=20x

divide 20 into 180

x=9

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Given that parallelogram ABCD and angle D=145 what is the measure of angle C
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Opposite angles of parallelogram are equal.
sum of interior angles of parallelogram is 360 degrees.

Therefore,
A + B + C + D = 360
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x = 35
Therefore angle C is 35 degrees 
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A dome of a building is in the form of a hemisphere from inside it was whitewashed at the cost of rupees 4989.60 if the cost of
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6 0
2 years ago
2/5 as a decimal and percentage
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8 0
3 years ago
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AveGali [126]

Answer:

So we reject the null hypothesis and accept the alternate hypothesis that rats learn slower with sound.

Step-by-step explanation:

In this data we have

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3)The test statistics used is

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5) So we reject the null hypothesis and accept the alternate hypothesis that rats learn slower with sound.

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Then we find the value of z for the given significance value given and the test about to be checked.

Then the test statistic is determined and calculated.

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The figure shows that the calulated z value lies outside the given z values

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