3 years ago

I need help I don’t understand

Mathematics

2 answers:

Leno4ka [110]3 years ago

7 0

Answer:

Step-by-step explanation:

im dont know, but im 80% sure

ahrayia [7]3 years ago

5 0

Answer:

Step-by-step explanation:

90% sure if not I think its HI....

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In a survey, 36% of the students said that they kept an electronic diary. There were 900 students who kept an electronic diary.

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The answer is 25000.

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90 men can complete a work in 24 days working 8 hrs a day. how many men are required to complete the same work in 18 days workin

JulsSmile [24]

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128 men

Step-by-step explanation:

90 × 28 × 8 = M × 18 × 15/2

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Write an equation in slope-intercept form of the line that passes through (6, -1) and (3, 47)

katrin2010 [14]

Answer:

Step-by-step explanation:

(47+1)/(3-6) = 48/-3 = -16

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y + 1 = -16x + 96

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3 years ago

Reggie lost 3 spaceships in level 3 of a video game. He list 30 points for each spaceship. When he completed level 3, he earned

kobusy [5.1K]

His score changed by 110 points.
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3 years ago

5c squared- d squared+3/2c - 4d...c= -1. d= -4

riadik2000 [5.3K]

For this case we have the following expression:

$5c ^ 2-d ^ 2 + \frac {3} {2} c-4d$

We must find the value of the expression when:

$c = -1\\d = -4$

Substituting we have:

$5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}$

Finally, the value of the expression is:

$\frac {7} {2}$

ANswer:

$\frac {7} {2}$

5 0

3 years ago