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2 years ago

6

Plssss helppppp and thanks you if answers are actually true then I give brain:)

1 answer:

san4es73 [151]2 years ago

7 0

The 3rd one and the last one.

You might be interested in

X^3-13x^2+40x=0 quadratic

lutik1710 [3]

Answer:

x(x-5)(x-8)

or

x=5

x=8

Step-by-step explanation:

x(x^2-13x+40)
x(x-5) (x-8)

6 0

3 years ago

san4es73 [151]

Step-by-step explanation:

<u>Step 1: Determine an ordered pair</u>

A solution of an equation just means that the point lies on the line. We can find any y-value when we plug in a specific x-value. For example, if we want to know what ordered pair lies at x=1, we just plug in y = -1/2(1) and solve for y which gives us -1/2. This gives us an ordered pair of (1, -1/2). We can continue to do this for any x value.

We can also reverse the order and plug in the y-value and get the x-value in order to accomplish the same goal but it's a bit harder.

Hope this helps!

6 0

1 year ago

Read 2 more answers

Pls help:Find all the missing elements:

Yuliya22 [10]

Answer:

<h3>B = 48.7° , C = 61.3° , b = 12</h3>

Step-by-step explanation:

In order to find B we must first angle C

To find angle C we use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |c| }{ \sin(C) }$

From the question

a = 15

A = 70°

c = 14

So we have

$\frac{15}{ \sin(70) } = \frac{14}{ \sin(C) }$

$\sin(C) = \frac{14 \sin(7 0 ) }{15}$

$C = \sin^{ - 1} ( \frac{14 \sin(70) }{15} )$

C = 61.288

<h3>C = 61.3° to the nearest tenth</h3>

Since we've found C we can use it to find B.

Angles in a triangle add up to 180°

To find B add A and C and subtract it from 180°

That's

A + B + C = 180

B = 180 - A - C

B = 180 - 70 - 61.3

<h3>B = 48.7° to the nearest tenth</h3>

To find b we can use the sine rule

That's

$\frac{ |a| }{ \sin(A) } = \frac{ |a| }{ \sin(B) }$

$\frac{15}{ \sin(70) } = \frac{ |b| }{ \sin(48.7) }$

$|b| = \frac{15 \sin(48.7) }{ \sin(70) }$

b = 11.9921

<h3>b = 12.0 to the nearest tenth</h3>

Hope this helps you

6 0

3 years ago

What is the measure of the angle at the tail end of the kite? if the top area is where its pointed is 122?

nataly862011 [7]

Answer:

The angle is 58 degrees

Step-by-step explanation:

Given

See attachment for kite

Required

The angle at the tail end

Represent this angle with x.

From the attached kite, we have:

1 angle = 122

2 angles = right-angled

So, we have:

$x + 122 +90+90 = 360$ --- sum of angles in a kite

$x + 302 = 360$

Solve for x

$x =- 302 + 360$

$x =58^\circ$

8 0

2 years ago

Question<br> Simplify the expression 7(a−3+4b).<br><br> 7(a−3+4b)=

Arte-miy333 [17]

Answer:

7a+28b=21

Step-by-step explanation:

7×a=7a

7×-3= -21

7×+4b=+28b

so....

7a-21+28b=0

7a+28b=21

5 0

2 years ago