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marysya [2.9K]
3 years ago
15

1/2 - (-1/3 + 2/5) please help?

Mathematics
2 answers:
DIA [1.3K]3 years ago
4 0

1/2-(-1/3+2/5)

= 1/2-(-0.33333333333333+2/5)

= 1/2-(-0.33333333333333+0.4)

= 1/2-(0.066666666666667)

= 1/2-0.066666666666667

= 0.5-0.066666666666667

= 0.43333333333333

gogolik [260]3 years ago
3 0

Answer: 13/30 or 0.4333333333

Step-by-step explanation:

Just add and subtract them.

Correct me if I am incorrect.

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Mrs. Thomas bought 2/4 yard of one fabric and 3/4 yard of a different fabric. How many total yards of fabric did she buy?
natta225 [31]
It is 5/4 yards, you just add 
When the denominator ( the bottom number ) is the same, just add the numerator ( the top number ) together :) 
hope this help

8 0
3 years ago
The general form for a linear equation is given as: y = a + bx. In the regression equation, b is called the ______.
Viktor [21]

Answer:

Slope

Step-by-step explanation:

In the regression equation y=a+bx, y is dependent variable and x is independent variable. It means that due to change in x the y changes respectively. The "a" is intercept of the model and it shows the value of y when x is zero. The "b" is the slope of the model and it depicts the change in y due to unit change in x. The positive value of b means that as the x increases y also increases and as the x decreases y also decreases. The negative value of b means that as the x decreases y increases and as the x increases the y decreases.The sign of b shows the type of relationship between independent and dependent variable.

5 0
3 years ago
3a^2-7a+6= <br> ( for a= -2 )
DENIUS [597]

Answer:

32

Step-by-step explanation:

Substitute a = - 2 into the expression and evaluate

3(- 2)² - 7(- 2) + 6 = 3(4) + 14 + 6 = 12 + 14 + 6 = 32

3 0
3 years ago
Read 2 more answers
What is the distance across the river in feet?
mario62 [17]

Answer:

375 ft

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{d}{125} = \frac{30}{10} ( cross- multiply )

10d = 3750 ( divide both sides by 10 )

d = 375 ft

4 0
3 years ago
(1.98x10^-3)+(5.2x10^-6)<br> Scientific notation
Trava [24]
The answer is
1.98x10^-3

I hope that’s correct.
You can check what I did.
I just wrote out the equation and then plugged them into the calculator.
4 0
3 years ago
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