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3 years ago

How can we rewrite 4 - (-9) as an addition problem?

Mathematics

2 answers:

mars1129 [50]3 years ago

8 0

Answer:

4 + 9

Explanation:

4 - (-9)

Subtracting a negative is the same thing as adding

4 - (-9) turns into 4 + 9

= 13

Tomtit [17]3 years ago

3 0

So if my ans was helpful u can follow me.

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A plane made a trip to Miami and back. It flew 400mph on the way there and flew 450mph on the return trip. How long did the trip

quester [9]

Answer:

equation: 400 + ( 450×10)= h

h= 4900.

4 0

3 years ago

Solve this x²+8/10 -x = 10/2

AysviL [449]

$x^2+\frac{8}{10}-x=\frac{10}{2}\\
x^2-x+\frac{8}{10}-\frac{10}{2}=0\\
x^2-x+\frac{8}{10}-\frac{50}{10}=0\\
x^2-x-\frac{42}{10}=0\\
x^2-x+\frac{1}{4}-\frac{1}{4}-\frac{42}{10}=0\\
(x-\frac{1}{2})^2=\frac{1}{4}+\frac{42}{10}\\
(x-\frac{1}{2})^2=\frac{5}{20}+\frac{84}{20}\\
(x-\frac{1}{2})^2=\frac{89}{20}\\
x-\frac{1}{2}=\sqrt{\frac{89}{20}} \vee x-\frac{1}{2}=-\sqrt{\frac{89}{20}}\\
x=\frac{1}{2}+\frac{\sqrt{89}}{\sqrt{20}} \vee x=\frac{1}{2}-\frac{\sqrt{89}}{\sqrt{20}}\\


$
$x=\frac{1}{2}+\frac{\sqrt{89}}{2\sqrt{5}} \vee x=\frac{1}{2}-\frac{\sqrt{89}}{2\sqrt5}}\\
x=\frac{1}{2}+\frac{\sqrt{445}}{10} \vee x=\frac{1}{2}-\frac{\sqrt{445}}{10}}\\
x=\frac{5+\sqrt{445}}{10} \vee x=\frac{5-\sqrt{445}}{10}}\\$

7 0

3 years ago

Identify the value of x and the length of each secant segment.

uranmaximum [27]

Answer:

x=7; NL=12; NP+20

Step-by-step explanation:

8 0

3 years ago

What is 0.2(5x – 0.3) – 0.5(–1.1x + 4.2) simplified? 0.2 [5x + (–0.3)] + (–0.5)(–1.1x + 4.2) x – 2.16

dedylja [7]

0.2(5x – 0.3) – 0.5(–1.1x + 4.2) = 6.5x – 2.06

Solution:

Given expression is 0.2(5x – 0.3) – 0.5(–1.1x + 4.2).

To simplify the expression, first multiply the common term within the bracket.

0.2(5x – 0.3) – 0.5(–1.1x + 4.2)

= (5x × 0.2 – 0.3 × 0.2) + (–1.1x × (–0.5) + 4.2 × (–0.5))

= (1x – 0.06) + (5.5x – 2.1)

= x – 0.06 + 5.5x – 2

Combine like terms together.

= x + 5.5x – 0.06 – 2

= 6.5x – 2.06

0.2(5x – 0.3) – 0.5(–1.1x + 4.2) = 6.5x – 2.06

Hence the simplified form of 0.2(5x – 0.3) – 0.5(–1.1x + 4.2) is 6.5x – 2.06.

6 0

3 years ago

Read 2 more answers

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Reika [66]

Answer:

y = -1

Step-by-step explanation:

6 0

2 years ago