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3 years ago

Factor x2 + 10x – 18. prime (x + 3)(x – 6) (x – 2)(x – 9) (x – 2)(x + 5)

Mathematics

1 answer:

Marta_Voda [28]3 years ago

8 0

Answer:

prime

Step-by-step explanation:

x^2 + 10x – 18

What two numbers multiply to -18 and add to +10

There are no numbers that multiply to -18 and add to 10

-1 *18 = -18 -1 +18 = 17

-2 *9 = -18 -2 +9 = 7

This cannot be factored

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Give 9.7814 correct to the: a) nearest whole place & b) one decimal place

Llana [10]

Answer:

a) 10

b) 9.8

Step-by-step explanation:

First, round it the nearest whole number:

9.7814 will round up to 10, since the decimal place .7 is larger than .5

Next, round to one decimal place:

9.7814 will round to 9.8, since the 0.08 will round the 0.7 up to 0.8

a) 10

b) 9.8

8 0

3 years ago

The quadrilateral shown is a rectangle. What is the measure of PR? (round to the nearest hundredth) A) 34.06 B) 37.12 C) 40.24 D

Nata [24]

Answer: OPTION B.

Step-by-step explanation:

The missing figure is attached.

For this exercise you need to use the Pythagorean Theorem. This is:

$a^2=b^2+c^2$

Where "a" is the hypotenuse and "b" and "c" are the legs of the triangle.

In this case you can identify in the figure the triangle PRS, so the diagonal PR is the hypotenuse of the triangle PRS.

Then you can say that:

$a=PR\\b=PS=17\\c=RS=33$

Therefore, knowing these values, you can substitute them into $a^2=b^2+c^2$ :

$PR^2=17^2+33^2$

Finally you must solve for PR in order to find its value. This is:

$PR=\sqrt{17^2+33^2}\\\\PR=37.12$

3 0

4 years ago

Is AABC-AXYZ? If so, identify the similarity postulate or theorem that

Nostrana [21]

Answer:

D would be the answer

Step-by-step explanation:

Mark as brainliest

8 0

3 years ago

What is the area of one trapezoidal face of the figure?

Arturiano [62]

The area of a trapezoid, A, is the average of the lengths of the bases (B and b) multiplied by the height, h.

$A = \dfrac{(B + b)h}{2}$

$A = \dfrac{(3~in. + 1~in.) \times 1~in.}{2}$

$A = \dfrac{4~in. \times 1~in.}{2}$

$A = \dfrac{4~in.^2}{2}$

$A = 2~in.^2$

3 0

4 years ago

The radius is cm.

Elza [17]

Answer:

The radius is 1.75 cm, 1 3/4 cm, or 7/4 cm (all the same, just in different forms)

The circumference in terms of π is 7/2(π) cm, 3.5(π), or 3 1/2(π) cm (all the same, just in different forms)

The approximate circumference of the circle is 10.99 or 11 cm. (don't know if it's supposed to be rounded)

Step-by-step explanation:

Radius = 1/2 of the diameter, so 1/2 of 7/2 is 1.75, 1 3/4, or 7/4 cm.

Circumference in terms of pi means to not approximate pi. Circumference of circle is πd, so the exact circumference would be 7/2 pi cm, 3.5 pi cm, or 3 1/2 pi cm.

3.5 x 3.14 = 10.99. 10.99 cm ≈ 11 cm.

3 0

2 years ago