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3 years ago

Which number can not be used to write related number sentences? explain. 5 7 9 14

1 answer:

4 0

The number 7 cannot be used to write related number sentences because it wouldn't fit into the equation & make it true.
9 + 5 = 14
5 + 9 = 14
14 - 5 = 9
14 - 9 =5
Nowhere in any of these equations can the #7 go in, & make these number sentences true.
Hope this helps & makes sense ! (:

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How do you factor 8x^2+18x+9=0

jeka57 [31]

First off, do a prime factoring of the constant and leading coefficient, namely 9 and 8 respectively.

so a prime factoring of 8 is 2*2*2, and a prime factoring of 9 is 3*3.

so, those are the factors... now, how do we produce products that gives us the middle coefficient +18?

well, let's see hmmmm 2 * 3 * 3 and 2 * 3....so that's 18 + 6, that's 24.. .so... no good is not 18, let's try again.

2*2*3 and 2 * 3, so that's 12 + 6, now, that's +18

so we'll use those, 2*2*3 and 2*3, or 4 * 3 an 2 * 3, (4x + 3)(2x + 3) = 0.

8 0

3 years ago

If a triangle has a base of 16 meters and a height of 10 meters, what is the area?

Marat540 [252]

Answer:

A = 80 m^2

Step-by-step explanation:

The area of a triangle is given by

A = 1/2 bh where b is the base length and h is the height

A = 1/2 (16) *10

A = 80 m^2

4 0

3 years ago

Read 2 more answers

Consider these statements.

igomit [66]

Answer:

Step-by-step explanation:

if we match the two informations we can say that the triangle is isosceles

5 0

3 years ago

Help please my teacher is putting in grade TODAY so i really need help

IRINA_888 [86]

Answer: 130 ft^2

Step-by-step explanation:

Area= 2(wl+hl+hw)

Area= 2(5•10+1•10+1•5)

Area= 2(50+10+5)

Area= 2(65)

Area= 130

5 0

3 years ago

Read 2 more answers

Can someone please help me

Marrrta [24]

Based on the knowledge of trigonometric expressions and properties of trigonometric functions, the value of the sine function is equal to - √731 / 30.

<h3>How to find the value of a trigonometric function</h3>

Herein we must make use of trigonometric expressions and properties of trigonometric functions to find the right value. According to trigonometry, both cosine and sine are negative in the third quadrant. Thus, by using the fundamental trigonometric expression (sin² α + cos² α = 1) and substituting all known terms we find that:

$\sin \theta = -\sqrt{1 - \cos^{2}\theta}$

$\sin \theta = - \sqrt{1 - \left(-\frac{13}{30} \right)^{2}}$

sin θ ≈ - √731 / 30

Based on the knowledge of trigonometric expressions and properties of trigonometric functions, the value of the sine function is equal to - √731 / 30.

To learn more on trigonometric functions: brainly.com/question/6904750

#SPJ1

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2 years ago