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rodikova [14]
3 years ago
15

Need help ASAP. Due in 15min….

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
8 0

1 \times \frac{3}{5}  + ( \frac{7}{10} )

Answer:

1 \times \frac{3}{5} + ( \frac{7}{10} )

irina [24]3 years ago
4 0

Answer:

Second and Fifth answers

Step-by-step explanation:

The negative is being multiplied by a negative so the 7/10 should be positive.

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The perimeter of a rectangle is 48 centimeters. The relationship between the length, the width, and the perimeter of the rectang
Evgesh-ka [11]

Answer:

The length in centimeters is (24-x) centimeters

Step-by-step explanation:

Mathematically, we are told that the equation linking the length, width and perimeter is as follows;

2(length) + 2(width) = 48

But in this case, we are told that the width is x centimeters

2(length) + 2(x) = 48

2(length) = 48-2x

length = (48-2x)/2

length = 24 - x

4 0
3 years ago
15. Find the length of segment DE of the triangle ABC.
ruslelena [56]

Answer:

Option C. 26\ units

Step-by-step explanation:

we know that

Triangles ADE and ABC are similar by AA similarity postulate

AB=2AD

Apply proportion

\frac{AD}{AB}=\frac{8x-6}{12x+4}\\ \\\frac{AD}{2AD}=\frac{8x-6}{12x+4}\\ \\\frac{1}{2}=\frac{8x-6}{12x+4}\\ \\12x+4=16x-12\\ \\16x-12x=4+12\\ \\4x=16\\ \\x=4\ units

Find the length of segment DE

DE=8x-6=8(4)-6=26\ units

4 0
3 years ago
For what value of a does 9 = (StartFraction 1 Over 27 EndFraction) Superscript a + 3?
vodka [1.7K]

Answer:

A

Step-by-step explanation:

9 = (1/27)^(a+3)

3² = (3^-3)^(a+3)

3² = 3^(-3a-9)

2 = -3a-9

-3a = 11

a = -11/3

7 0
3 years ago
1)When adding two negative numbers, _________ the absolute value of the numbers and keep the negative sign.
butalik [34]


1) add.

for example -1 + -2 = - (||-1| + |-2||), which is -(1+2) or -3


2) subtract

for example 4 + -7 = -(||-7| + |4||), which is - |7 - 4| or -3


3) change
for example 3 - (- 2) = 3 + 2


4) -10

the sum is -10.25, which is closest to -10

4 0
3 years ago
Read 2 more answers
Can someone help me on this
Serggg [28]
I don't know if you still need help. but the answer is the first one.
4 0
3 years ago
Read 2 more answers
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