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4 years ago

Math test 13 points.

Mathematics

2 answers:

Zepler [3.9K]4 years ago

6 0

The answer is the second one

Vinil7 [7]4 years ago

6 0

the answer is b) 283.5 good luck with your exam

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Help me please my test is tomorrow!

Marysya12 [62]

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$4z + 2 = 10z - 1$

Add sides 1

$4z + 2 + 1 = 10z - 1 + 1$

$4z + 3 = 10z$

Subtract sides 4z

$- 4z + 4z + 3 = - 4z + 10z$

$3 = 6z$

$6z = 3$

Divide sides by 6

$\frac{6z}{6} = \frac{3}{6} \\$

$z = \frac{1}{2} \\$

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$3y = y + 3$

Subtract sides y

$- y + 3y = - y + y + 3$

$2y = 3$

Divide sides by 2

$\frac{2y}{2} = \frac{3}{2} \\$

$y = \frac{3}{2} \\$

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Thus the correct answer is :

$a) \: y = \frac{3}{2} \: , \: z = \frac{1}{2} \\$

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3 years ago

A circle is centered at the point (7,1) and passes through the point (8,7). what is the radius

Scorpion4ik [409]

Easy

the radius is the distance from the center to a point on the circle

we are given
center=(7,1)
a point=(8,7)
find the distance
distance formula
D= $\sqrt{(x2-x1)^2+(y2-y1)^2}$

so the distance between point and center is radius
D= $\sqrt{(8-7)^2+(7-1)^2}$
D= $\sqrt{(1)^2+(6)^2}$
D= $\sqrt{1+36}$
D=√37 units

radius is √37 units

7 0

4 years ago

Asap!!!!!!!! Can you help me please

Oksana_A [137]

C is the only one that makes sense im not 100%

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3 years ago

Chang runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes.

PSYCHO15rus [73]

2.8 miles.

My Work/Reasoning:
First we find the rate. 7/60 mpm (miles per minutes)
Then we multiply that by 24. 7/60 * 24
Finally, we solve the equation and learn that Chang would run 2.8 miles in 24 minutes.

7 0

4 years ago

Read 2 more answers

PLEASE HELP WITH WORK EXPLAINED (WILL GIVE BRAINLEST)

Inessa05 [86]

Ricks sporting good:

100% - 20% = 80% so the basketball is on sale for 80% of the original price so 24.95 x 0.80 = 19.96 ( sale price)

Sports Expert:
100% - 25% = 75%
so the basketball is on sale for 75% of the original price 25.80 x 0.75 = 19.35 (sale price)

19.35 is less than 19.96 so the better deal is from Sports Expert

8 0

4 years ago