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3 years ago

PLEASE ANSWER !

Mathematics

1 answer:

ivanzaharov [21]3 years ago

8 0

Answer:I think no, because 25+35+45=150. 150x3=450

Maybe, for 4 months he'd have enough. So, 150x4=600. So Jamal would have some extra money!

Step-by-step explanation:

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Someone help I just got new assignments 23,24,25,26,27,28,29, and 30

SSSSS [86.1K]

Answer:

23: y = -0.4

24: b = -1.8

25: m = 1/2

26: g = 1/4

27: s = 3/2

28: w = -12/5

29: z = 5/4

30: a = -9/5

Step-by-step explanation:

23:

$3y + 5.2 = -5y + 2$
$3y+5.2+5y=-5y+2+5y$
$8y + 5.2 = 2$
$8y+5.2-5.2=2-5.2$
$8y = -3.2$
$\frac{8y}{8} = \frac{-3.2}{8}$
$y = -0.4$

24:

$10b-2=7b-7.4$
$10b-2-7b=7b-7.4-7b$
$3b - 2 = -7.4$
$3b -2 + 2 = -7.4 + 2$
$3b = -5.4$
$\frac{3b}{3} = \frac{-5.4}{3}$

$b = -1.8$

25:

$2m - 2 = 6m - 4$
$2m-2-6m=6m-4-6m$
$-4m-2=-4$
$-4m-2+2=-4+2$
$-4m = -2$
$\frac{-4m}{-4} = \frac{-2}{-4}$
$m = \frac{1}{2}$

26:

$3g+5=7g+4$
$3g+5-7g=7g+4-7g$
$-4g+5=4$
$-4g + 5 - 5 = 4-5$
$-4g = -1$
$\frac{-4g}{-4} = \frac{-1}{-4}$
$g = \frac{1}{4}$

27:

$4s-1=-2s+8$
$4s-1+2s=-2s+8+2s$
$6s - 1 = 8$
$6s - 1 + 1 = 8+1$
$6s = 9$
$\frac{6s}{6} = \frac{9}{6}$
$s = \frac{3}{2}$

28:

$9w+3=4w-9$
$9w+3-4w=4w-9-4w$
$5w + 3=-9$
$5w + 3 - 3 = -9-3$
$5w = -12$
$\frac{5w}{5} = \frac{-12}{5}$
$w = \frac{-12}{5}$

29:

$6z-7=2z-2$
$6z-7-2z=2z-2-2z$
$4z -7 = -2$
$4z-7+7=-2+7$
$4z = 5$
$\frac{4z}{4} = \frac{5}{4}$
$z = \frac{5}{4}$

30:

$-a+3=4a+12$
$-a+3-4a=4a+12-4a$
$-5a+3=12$
$-5a + 3 - 3 = 12-3$
$-5a = 9$
$\frac{-5a}{-5} = \frac{9}{-5}$
$a = -\frac{9}{5}$

6 0

2 years ago

Help me solve please.<br><img src="https://tex.z-dn.net/?f=a%20%3D%202%5Cpi%20r%5E%7B2%7D%20%20%2B%202%5Cpi%20rh%20%20%5C%5C%20%

Tema [17]

a = 2πr² + 2πrh

a - 2πr² = 2πrh

(a - 2πr²)/2πr = 2πrh/2πr

h = (a - 2πr²)/2πr

6 0

3 years ago

Which expression is equivalent to 3/4x-1/4xy

kap26 [50]

Answer:

x(3/4-y/4)

Step-by-step explanation:

3/4x-1/4xy=x(3/4-y/4)

6 0

2 years ago

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Given that A=xy find the percentage increase in A when both X and Y increase by 10%

Lelechka [254]

A=xy
If there is 10% increase in x then,
New value of x = x + 10%of x =1.1x
similarly for y
New value of y after increase= 1.1 y
New value of A after increase in x and y = 1 .1x × 1.1 y= 1.21xy
now
increase amount in A= New value of A - old value of A
=1.21xy - xy= 0.21xy
percentage increase in A= (0.21xy÷xy )× 100= 21%

7 0

3 years ago

Factor completely 2x^3+6x^2+10x+30

beks73 [17]

Answer:

2(x+3) (x^2 + 5)

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers