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3 years ago

I need to know the answers to 10-27!!!! Plz label each number

Mathematics

1 answer:

Virty [35]3 years ago

3 0

10) 46
11) 115
12) 23
13) 161
14) 92
15) 138

16) 0.368
17) 9
18) 765
19) 336
20) 122.1
21) 0.45

22) 52
23)$33.60
24) 1 hour 12 minutes
25) 95
26) 398.24
27) A)
Test Number Correct Score Total
Math 68 ( 80% ) 85
Science ( 63 ) 90% 70

B) Science
C) 48 Questions

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Write an equation for each context. Draw a model first if necessary, and make sure you define your variable and what it represen

natta225 [31]

Answer:

a. $6x+1240=12484$

$x_1+x_2+x_3+x_4=65\\x_2=2x_1\\x_3=x_1+2\\x_4=0.25x_2$

c. $5x+20=415$

Step-by-step explanation:

a. In the account are 6 deposits of the paid that Tom gets each month and the initial $1240. Let $x$ be the paid Tom gets each month, then:

$6x+1240=12484$

Solving for $x$ :

$6x=12484-1240\\6x=11244\\x=\frac{11244}{6} \\x=1874\\$

b)Let $x_1$ be pounds contained in the first box, $x_2$ the pound in the second box, $x_3$ the pounds in the third box and $x_4$ the pound in the fourth box, then:

$x_1+x_2+x_3+x_4=65\\x_2=2x_1\\x_3=x_1+2\\x_4=0.25x_2$

Substitute the value of $x_2$ in the last equation:

$x_4=0.25(2x_1)\\x_4=0.5x_1$

Substitute all the equation in the first and solve for $x_1$ :

$x_1+(2x_1)+(x_1+2)+(0.5x_1)=65\\4.5x_1=65-2\\x_1=63/4.5=14$

Solving for x2,x3, and x4:

$x_2=2x_1=2*14=28\\x_3=x_1+2=14+2=16\\x_4=0.25x_2=0.25*28=7$

c) Simon is ordering 5 cans and 5 racquets, the total from the cans is 5(4)=$20. Let x be the cost of each racquet,

$5x+20=415$

Solving for x:

$5x=415-20\\x=395/5=79$

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3 years ago

Solve the following equation using algebric formulas<br> (x-y)(x+y)

photoshop1234 [79]

The simplified expression of (x + y)(x - y) is x^2 - y^2

<h3>How to solve the expression?</h3>

The expression is given as:

(x + y)(x - y)

Expand the bracket

x(x - y) + y(x -y)

Further, expand

x^2 - xy + xy - y^2

Evaluate the like terms

x^2 - y^2

Hence, the simplified expression of (x + y)(x - y) is x^2 - y^2

Read more about expressions at:

brainly.com/question/723406

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2 years ago

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netineya [11]

Answer:

9/15=3/5=0.6

Step-by-step explanation:

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3 years ago

Help me find like terms, (multiple choice).

vichka [17]

Answer:

Like terms:

$\frac{1}{2}x^{2}$

1.25x²

-8x²

Step-by-step explanation:

Like terms are terms that have the same variable to the same exponent. In this case, the only like terms are those with the variable 'x' to the exponent of '2', or x². This would include the terms:

$\frac{1}{2}x^{2}$

1.25x²

-8x²

The term 5yx², also includes x², however, it also includes the variable 'y' which makes it 'unlike' the other terms.

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4 years ago

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sattari [20]

Answer:

C6 greeting cards for $23.40

Step-by-step explanation:

A. 13.5/3=4.5

B. 38.25/9=4.25

C. 23.4/6=3.9

d. 32.8/8=4.1

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3 years ago