2 years ago

What is the square root of -1?

Mathematics

1 answer:

Morgarella [4.7K]2 years ago

6 0

Answer:

It has no square root because it's negative.

Step-by-step explanation:

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After 5 tests Dara's average score was 88 what score must she average on the next two tests to have a seven-test average of 90?

Tomtit [17]

After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:

$90 \times 7 = 630$

Her average after 5 tests was 88. Her total score on the 5 tests is:

$88 \times 5 = 440$

Subtract:

$630-440 = 190$

Find the average by dividing by 2:

$190 \div 2 = 95$

Her average must be 95

3 0

2 years ago

What is the sum of the measures of interior angles of a 15-sides polygon

oksano4ka [1.4K]

Using
sum = (n-2)180
= (15-2)180 = 13×180 = 2340°

5 0

3 years ago

5. Simplify. 6g + 9 + g-4*

Ivanshal [37]

Answer:

7g+5 I'm pretty sure

Step-by-step explanation:

6g+g=7g 9-4=5

so it's 7g+5 simplified

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2 years ago

Which is the measure of XBA if ray BA bisects XBY, which measures 86 grades?

Gwar [14]

Answer:

∠XBA=43°

Step-by-step explanation:

we know that

If ray BA bisect angle ∠XBY

then

∠XBA=∠XBY/2

we have

∠XBY=86°

substitute

∠XBA=86°/2=43°

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3 years ago

There are 10 cars in the parking lot some of the cars are red and some of the cars are black how many red cars and how many blac

Mice21 [21]

1 to 9 red cars and 1 to 9 black cars.

7 0

2 years ago

Read 2 more answers