All categories

4 years ago

The graph below represents the solution set of which inequality? x2 – 2x – 8 0 x2 + 2x – 8 > 0

Mathematics

2 answers:

abruzzese [7]4 years ago

8 0

Answer: x^2+2x-8<0

Step-by-step explanation:

A. x^2 - 2x - 8 < 0

(x - 4)(x + 2) < 0

B. x^2 + 2x - 8 < 0

(x + 4)(x - 2) < 0

C. x^2 - 2x - 8 > 0

(x - 4)(x - 2) > 0

D. x^2 + 2x - 8 > 0

(x + 4)(x - 2) > 0

When you test a point in the interval between -4 and 2, for example 0, it is negative.

sineoko [7]4 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

In mrs kuliks class there are 20 female students and 8 male students what is the percent of male students

pshichka [43]

Answer:

About 29%

Step-by-step explanation:

8 0

3 years ago

The perimeter of a rectangular field is 264 yards. If the width of the field is 54 yards, what is its length?

SIZIF [17.4K]

P = 2(L + W)
P = 264
W = 54

264 = 2(L + 54)
264 = 2L + 108
264 - 108 = 2L
156 = 2L
156/2 = L
78 <=== Length is 78 yards

7 0

3 years ago

Read 2 more answers

The bus fare in a city is 1.75 . People who use the bus have the option of purchasing a monthly coupon book for . With the coupo

lorasvet [3.4K]

Answer:

26 times

Step-by-step explanation:

Given

Without Coupon

$Rate = 1.75$ per trip

With Coupon

$Coupon = 26$

$Rate = 0.75$ per trip

Required

The number of trips to be taken for both option (i.e. with or without coupon) to be equal

See comment for complete question

Let the number of trips in a month be x.

Without Coupon

Total amount is:

$Total = Rate * x$

$Total = 1.75x$

Without Coupon

Total amount is:

$Total = Coupon + Rate * x$

$Total = 26 + 0.75x$

To get x, we simply equate both options

$1.75x = 26 + 0.75x$

Collect like terms

$-0.75x + 1.75x = 26$

$x = 26$

5 0

3 years ago

What is the slope of the line? Please help thank you

Elis [28]

Answer:

Step-by-step explanation:

basically slope determined from a graph like this can be solved by counting. the formula you need to use is rise/run. choose one of the orange points on the line and then count how many spaces up the next dot is. once we have our number (3), you can count how many spaces over the dot is to the right (1) this leaves you with the fraction 3/1 or 3.

also if the dot is to the left it means the slope is negative. so if the dot is 3 up and 1 to the left the slope would be -3

8 0

3 years ago

Find the surface area of a square based pyramid if the edge of the base is 8 inches and the slant height is 20 inches.

Sliva [168]

Answer:

384 Square Inches

Step-by-step explanation:

Given a square pyramid with base side edge and slant height

$\text{Surface Area} = A+\dfrac12 ps, where:\\A=$Area of Base\\p=Perimeter of base\\s=Slant Height$

In the given pyramid:

Slant Height=20 inches
Base Edge = 8 Inches

Therefore:

Area of Base, A =8 X 8 =64 Square Inches

Perimeter of base, p =4 X 8 =32 Inches

$\text{Surface Area} = 64+\dfrac12 *32*20\\=64+320\\=384$ Square Inches$

7 0

4 years ago