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Trava [24]
2 years ago
7

Can someone pleaseeeeeeeeeeeeeee help me with these questions? Thanks.

Mathematics
1 answer:
tresset_1 [31]2 years ago
8 0

the answer for y would be 7

Step-by-step explanation:

don't forget to mark brainliest

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A right triangle has a base equal to 13 inches and a height equal to 18 inches. Find the area of the trlangle.
never [62]

Answer:

117

Step-by-step explanation:

The formula for a triangle is base times hight divided by two. So, 13 x 18 = 234, and 234/2 = 117

3 0
3 years ago
In square ABCD, AC = 6x + 10, and BD = 10x + 2. What is the length of AC?
Oksanka [162]

Answer:

B) 22

Step-by-step explanation:

AC = BD

6x+10 = 10x+2

simplify:

subtract 6x and 2 from both sides:

4x = 8

x = 2

then:

AC = 6(2)+10 = 22

6 0
2 years ago
Read 2 more answers
A DVD player with a list price of $100 is marked down
dsp73

Answer:

$56

Step-by-step explanation:

100 - (100(0.30)) = 100 - 30 = 70

70 - (70(0.20)) = 70 - 14  = 56

5 0
2 years ago
last year 1/5 of the students in your class played a sport this year 10 students join the class five of the new students play a
tino4ka555 [31]

Answer:

60

Step-by-step explanation:

last year 1/5 of the class played sports, so s = (1/5) c

the next year, s increased by 5, c increased by 10 and the fraction changed to 1/4, so for the next year (s+5) = (1/4)(c+10)

To solve this we can substitute s = (1/5)c from the first equation into the second, so

((1/5)c + 5)=(1/4)(c+10), simplify both sides

(1/5)c + 5 = (1/4)c + 10/4, simplify 10/4 to 5/2

(1/5)c + 5 = (1/4)c + 5/2, multiply both sides by 20 to eliminate fractions (least common multiple of 2, 4 and 5)

4c + 100 = 5c + 50, subtract 4c, subtract 50 from both sides

50 = c, number of students in class last year was 50, this year is 10 more, so this year is 60

5 0
2 years ago
Find the perimeter of this triangle pls
noname [10]

Answer:

72 cm i think

Step-by-step explanation:

19+19+10+10+7+7

3 0
2 years ago
Read 2 more answers
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