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3 years ago

Factor the perfect square trinomialsa2+20a+100

Mathematics

1 answer:

sukhopar [10]3 years ago

6 0

Answer:

-10

Step-by-step explanation:

$a^{2} +(10+10)a+100$

$a^{2} +10a+10a+100$

$a(a+10)+10(a+10)$

$(a+10)(a+10)$

so,a=-10

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7 1/2 divided by 1 1/2 = 5 How to check the answer

Gnom [1K]

Answer:

We verified that the equation $7\frac{1}{2}\div1\frac{1}{2}=5$ has both sides equal.

Step-by-step explanation:

We need to solve and verify: $7\frac{1}{2}\div1\frac{1}{2}=5$

Solving:

$7\frac{1}{2}\div1\frac{1}{2}=5$

Converting into improper fractions

$\frac{15}{2}\div\frac{3}{2}=5$

Converting division sign into multiplication and reversing 3/2 i.e

$\frac{15}{2}\times\frac{2}{3}=5$

Now simplifying

$\frac{15}{3}=5 \\5=5$

So, We verified that the equation $7\frac{1}{2}\div1\frac{1}{2}=5$ has both sides equal.

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3 years ago

Explain the mistake<br> 3.5 times by 10 = 3.50

natulia [17]

3.5 × 10 = 35.0
The mistake is that you only added a zero to the answer (3.5 -> 3.50), but you forgot to replace the point in your answer (because 3.50 is wrong and 35.0 is correct). Hence, you should have replaced to point, by moving it one spot to the right.

4 0

4 years ago

Help me please I need help 6

kvasek [131]

Answer:

69.6

Step-by-step explanation:

sin 55 = x / 85

0.8191520443 = x / 85

x = 69.6

5 0

3 years ago

A giant circular fair ride has a radius of 60m, with 12passenger pods spaced around the circumference at equal distances. How fa

nekit [7.7K]

Answer:

The distance between the 6th and 10th seat is approximately 126m

Step-by-step explanation:

First of all, we will need to calculate the circumference of the circular fair ride.

This is $2\pi r= 2 \times \pi \times 60=377m$

hence the circumference of the circle is 377m

At this point, we will have to take note that the pods are equally spaced.

To get the distance between the sixth pod and the tenth pod, we will have to use the principle of fractions of a whole.

There are 12 seats in total, the distance between the 6th and tenth seat is 4 seats. Expressing this distance in terms of seats, as a fraction is 4/12 equally spaced seats.

This ratio can be related to the circumference of the circle as

$\frac{4}{12} \times377=125.66m \approx 126m$

Therefore, the distance between the 6th and 10th seat is approximately 126m

8 0

3 years ago

Evaluate |-2.8| please help its for a quiz

34kurt

Answer

2.8

Step-by-step explanation:

The | | lines mean absolute value which means how far something is from zero, making the answer 2.8.

5 0

4 years ago

Factor the perfect square trinomialsa2+20a+100​

Factor the perfect square trinomialsa2+20a+100