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3 years ago

Need help on the last problem please.

Mathematics

1 answer:

pshichka [43]3 years ago

6 0

Answer:

6 of x and 5 of y

Step-by-step explanation:

x = number of closets of the first type

y = number of closets of the second type

1200 = 100x + 120y

100 = 10x + 8y

10x = 100 - 8y

10x(100 - 8y) + 120y = 1200

1000 - 80y + 120y = 1200

40y = 200

y = 5

100 = 10x + 8×5 = 10x + 40

60 = 10x

x = 6

20x + 24y = max

20×6 + 24×5 = 120 + 120 = 240

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Robert went to the grocery store and purchased cans of soup and frozen dinners. each can of soup has 300 mg of sodium and each f

Paraphin [41]

There are 9 cans of soup and 5 cans of frozen dinner.

The variables used for soup and frozen dinner are x and y respectively.

Step-by-step explanation:

Let,

Soup = x

Frozen Dinner = y

According to given statement of sodium;

300x + 500y = 5200 eqn 1

And,

x + y = 14 eqn 2

$Multiplying\ equation\ 2\ with\ 300\\300(x+y=14)\\300x+300y=4200\ Eqn 3\\$

Subtracting Eqn 3 from Eqn 1;

$(300x+500y)-(300x+300y)=5200-4200\\300x+500y-300x-300y=1000\\200y=1000\\y=\frac{1000}{200} \\y=5$

Putting value of y in Eqn 1;

$300x+500(5)=5200\\300x+2500=5200\\\\Subtracting\ 2500\ from\ both\ sides\ \\300x+2500-2500=5200-2500\\300x=2700\\x=\frac{2700}{300} \\x=9$

There are 9 cans of soup and 5 cans of frozen dinner.

The variables used for soup and frozen dinner are x and y respectively.

Keywords: Variables, linear equations, subtraction.

Learn more about linear equations at;

#LearnwithBrainly

5 0

3 years ago

(-12)^9 negative or positive

g100num [7]

(-12)^9 is a negative because a negative times a positive is negative. The answer to (-12)^9 is -5159780352.
Hope you learned something :)

3 0

3 years ago

can anyone help me asap plzz. Solve the inequality k + 6 ≤ 21; (A)k ≥ 27 (B)k ≤ 15 (C)k ≥ 15 (D)k ≤ 27

Ksenya-84 [330]

Answer:

Solve the inequality k + 6 ≤ 21;

(A)k ≥ 27

<u>(B)k ≤ 15 </u>

(C)k ≥ 15

(D)k ≤ 27

Step-by-step explanation:

$K+6\leq 21\\ -6 -6\\K\leq 15$

6 0

3 years ago

What is the area of this figure a triangle and square and four 4 and one 6

Vlada [557]

Answer:

Area = 1/2 x bxl

Step-by-step explanation:

8 0

4 years ago

Someone please please help me with this !

Elanso [62]

Answer:

551.8 feet

Step-by-step explanation:

We are given

Adjacent = 1300 feet

Opposite = x

Angle = 23°

We solve using the trigonometric function Tangent

tan θ = Opposite/Adjacent

tan 23 = x/1300 feet

Cross Multiply

x = tan 23 × 1300 feet

x = 551.81726107 feet

Approximately = 551.8 feet

The Length of the building = 551.8 feet

3 0

3 years ago