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2 years ago

Help me! ill give brainiest. this is my finals and im not doing good!

Mathematics

2 answers:

vredina [299]2 years ago

8 0

1 3/9 is the answer your looking for

Alex73 [517]2 years ago

4 0

Answer:

question 1 = 1 3/9 question 2 = 8/9 question 3 = 11/22

Step-by-step explanation:

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I need this ASAP!!<br> Please show work as well, TY SO MUCH!!

shtirl [24]

Answer:

Step-by-step explanation:

19.

a) to find thhe x- intercept we make y=0

x² +4x -5 = 0

(x+5)(x-1) =0

x+5=0 so x=- 5

x-1 =0 so x= 1

y-intercept is at (0, -5)

axis of symmetry is at

x=-b/2a =-4/2*1 = -2

x= -2

vertex is at (-2, -9) because x coordinate is on the axis of symmetry at -2 and

y= x² +4x -5= (-2) ² +4(-2) -5 = 4-8-5 = 4-13 = -9

4 0

3 years ago

If AC=24 in and CE=13 in EA=

Hunter-Best [27]

Add them together
AC+CE= EA
24+13= 37

3 0

3 years ago

The area of a rectangle is 21 yd.² and the length of a rectangle is 1 yard or less than twice the width find the dimensions of t

emmasim [6.3K]

Answer:

length = 6 yards

width = 3.5 yards

Step-by-step explanation:

the length of a rectangle is 1 yard less than twice the width

LEt 'w' be the width of the rectangle

and 'l' be the length of the rectangle

length l = 2 times the width -1

so l = 2w -1

Area of the rectangle = length * width

Area = l * w

we know length is 2w-1 and given area = 21

21 = (2w-1) * w

$21= 2w^2 - w$

subtract 21 on both sides

$0= 2w^2 - w - 21$

now solve for 'w'

$0= 2w^2 +6w -7w- 21$

0 = 2w(w+3)-7(w+3)

0= (2w-7)(w+3)

2w-7 = 0 and w+3 =0

w = 7/2 w=-3

width cannot be negative so we ignore w=-3

width w= 3.5

length = 2w-1= 2(3.5) - 1= 7-1=6

length = 6 yards

5 0

4 years ago

Simply by factoring 175

valentinak56 [21]

How to factor 175:

Find the factors of 175:

1, 5², 7

**Remember that factoring by prime numbers will get the job done more efficiently!**

Hope this helps!

3 0

4 years ago

Evaluate y=x squared minus 2x plus one for 3i

pychu [463]

Answer:

$- 8 - 6i$

Step-by-step explanation:

The given expresion is

$y = {x}^{2} - 2x + 1$

We want to evaluate this expression when x=3i

We substitute to obtain:

$y = {(3i)}^{2} - 2(3i) + 1$

We simplify to get

$y = {3}^{2} \times {i}^{2} - 6i + 1$

Recall that

${i}^{2} = - 1$

This implies that:

$y = 9 \times - 1 - 6i + 1$

$y = - 9 - 6i + 1$

$y = - 8 - 6i$

3 0

3 years ago