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exis [7]
3 years ago
10

PLEASE HURRY ILL GIVE BRAINLIEST FOR FIRST ANSWER

Mathematics
1 answer:
TEA [102]3 years ago
4 0

Answer:

(b) 17 1/3

Step-by-step explanation:

mixed number

A number is written as a whole number and a fraction

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I NEED HELP ASAP THANKSSS<br><br> factor x^2 +9x+20
matrenka [14]

Answer:

(x + 5)(x + 4)

Step-by-step explanation:

x^{2} +9x+20=(x+5)(x+4)

6 0
3 years ago
Read 2 more answers
Let g(x) = -5/?. Find g(g(-1))
IRISSAK [1]

Answer:

-1

Step-by-step explanation:

g(-1) = -5/-1 = 5

g(5) = -5/5

g(g(-1)) = -1

7 0
3 years ago
-[8x+(6x+8)=8-(3x+7)
Bas_tet [7]

Answer:

the answer should be x=  -9 over 11

Step-by-step explanation:

8 0
3 years ago
Use the Pythagorean Theorem to find the measure of the space diagonal line in the box
madreJ [45]

Answer:

14.42inches

Step-by-step explanation:

Given the following

b = 5 in

c = 8in

we are to find the measure of the space diagonal line

Using the pythagoras theoreml

l^2 = b^2 + c^2

l^2 = 13^2 - 5^2

l^2 = 169 -25

l^2 = 144

l = 12in

To get the measure of the space diagonal line in the box, we will use the pythagoras theorem;

s^2 = l^2 + c^2

s^2 = 144 + 8^2

s^2 = 144 + 64

s^2 = 208

s= 14.42inches

Hence the required length ix 14.42inches

3 0
3 years ago
Two sisters like to compete on their bike rides. Tamara can go 4 mph faster than her sister, Samantha. If it takes Samantha 1 ho
Triss [41]

Answer:

16 mph

Step-by-step explanation:

You should first form equations related to this information

Given,Tamara can go 4 mph faster than her sister, Samantha

Lets take speed to ride a bike for Samantha to be=  x mph

The speed to ride a bike for Tamara will be= x+4 mph

To cover a distance of 80 miles, Samantha takes 1 hour longer than Tamara

Introduce the formula for time; time=distance/speed=D/S where D is distance in miles and S is speed in miles per hour

Here time Samantha takes to cover a distance of 80 miles is 1 hour more than that taken by Tamara, hence

<u>Time taken by Samantha</u>

=\frac{80}{x}

<u>Time taken by Tamara</u>

=\frac{80}{4+x}

<u>Equation for difference in time</u>

=\frac{80}{x} -\frac{80}{4+x} =1

Solve the equation for difference in time to get value of x which is samantha speed

=\frac{80}{x} -\frac{80}{x+4} =1\\\\\\=80(4+x)-80(x)=x(4+x)\\\\\\=320+80x-80x=4x+x^2\\\\\\=x^2+4x-320=0

Solve quadratic equation by the quadratic formula where a=1,b=4 and c=-320

x=(-b±√b²-4ac)÷2a

x=(-4±√4²-4×1×-320)÷2×1

x=\frac{-4+/-\sqrt{4^2-4*1*-320} }{2} \\\\\\x=(-4+/-\sqrt{1296} )/2\\\\\\x=\frac{-4+36}{2} =\frac{32}{2} =16

Samantha speed is 16 mph

6 0
3 years ago
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