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3 years ago

What is the answer for -2(-3.4)= ?

Mathematics

2 answers:

Ronch [10]3 years ago

4 0

Answer:

6.8

Step-by-step explanation:

negative 2 times negative 3 is -6.

negative 2 times negative 0.4 is -0.8.

add them together :)

gtnhenbr [62]3 years ago

4 0

Answer:

6.8

Step-by-step explanation:

hope this helps

if it doesnt lmk plss

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What are the roots of the function y = 4x2 + 2x – 30? To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x

nasty-shy [4]

4x² + 2x - 30 = 0

factor out the GCF:
2(2x² + x - 15) = 0

factor the trinomial completely:
2x² + x - 15 = 0
2x² + 6x - 5x - 15 = 0
2x(x + 3) - 5(x + 3) = 0
(2x - 5)(x + 3) = 0

use the zero product property and set each factor equal to zero and solve:
2x - 5 = 0 or x + 3 = 0
2x = 5 x = -3
x = 2.5

The roots of the function are x=-3, x=2.5

8 0

3 years ago

Read 2 more answers

Write 34% as a fraction in simplest form

max2010maxim [7]

Answer:

The answer is that the simplest fraction form of 34% is 17/50

Step-by-step explanation:

Both the numerator and denominator of the fraction 34/100 can only be divided by 2, to satisfy creating its simplest form.

34% = 17/50

Have an awesome day! :D

7 0

2 years ago

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You earned $75.70. You would like to buy some new T-shirts. Estimate the number of T-shirts you can buy if each one costs $10.80

Alex787 [66]

the answer is 7 t-shirts

divide 75.70 by 10.80

hope this helped :)

4 0

3 years ago

What procedure will find the sum a+b of two numbers where a and b represent any integer?

ElenaW [278]

Answer:As rational number includes natural number, whole number ,integers also.

⇒Natural number(1,2,3,4....) is a rational number also.

So, when A= Natural number , B=Any other natural number

Just add two natural number using simple law of addition.

⇒As Whole numbers(0,1,2,3,...) are Rational number also.

So If A=any whole number, B=Any other whole number

Add the whole number in any order using law of addition.

⇒Coming to integers (....-123,....-5,...-1,....12,....59,.....) By taking any two integers ,

1. Both of them are positive add using simple law of addition.

2. One of them is positive and other is negative , if larger one has positive sign before it just subtract smaller one from larger one and put positive sign before the result.and if larger one has negative sign before it ,subtract smaller one from larger one and put negative sign before the result.

⇒If both of them are negative , just add the two integers and apply negative sign before the result.

4. Rational number as fractions ,

A=m/n and B=p/q

A+B=m/n + p/q

find LCM of n and q.

If n and q are co-prime multiply n and q to get the LCM.For example if n=5, q=7, then LCM=5×7=35

If n and q are not co-prime find the factors of n and q .take out the common factors and then multiply the common factors with those factors which are not common.

For example, n=15, q=20

15=5×3

20=2×2×5

common factor=5

non common factor=2,2,3

LCM=5×2×2×3=60

Suppose LCM(n,q)= K

⇒p/q+m/n

So ,

which is the way to find LCM of rational number when theyare fractions.

Step-by-step explanation:

4 0

3 years ago

1. A baseball player got a hit 19 times in his last 64 times at bat.

fiasKO [112]

A) $Probability =0.297$

B)In 200 times he can hit 59 times !

Step-by-step explanation:

Here we have , A baseball player got a hit 19 times in his last 64 times at bat. We need to find the following :

a. What is the experimental probability that the player gets a hit in an at bat?

According to question ,

Favorable outcomes = 19

Total outcomes = 64

Probability = (Favorable outcomes)/(Total outcomes) i.e.

⇒ $Probability = \frac{19}{64}$

⇒ $Probability =0.297$

b. If the player comes up to bat 200 times in a season, about how many hits is he likely to get?

According to question , In 64 times he hit 19 times . In 1 time there's probability to hit 0.297 times! So ,In 200 times he can hit :

⇒ $Hit =0.297(200)$

⇒ Hit = 59.36

Therefore , In 200 times he can hit 59 times !

4 0

3 years ago