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3 years ago

Which expression has a negative value? 7+3(-4)(2) -2[12/(-3)] (15-7)-(9/3) -5[7+(-14)]-30

Mathematics

2 answers:

denis23 [38]3 years ago

4 0

Answer:

7+3(-4)(2) -2[12/(-3)] (15-7)-(9/3) -5[7+(-14)]-30= 49

Step-by-step explanation:

andrew11 [14]3 years ago

4 0

Answer

7+3(-4)(2)

Step-by-step explanation:

As a mutually exclusive question (only one of these four can have the negative value), the other three would be default have non-negative values (either positive or 0).

Solving 7+3(-4)(2) requires remembering order of operations, which the acronym P.E.M.D.A.S. is useful for (Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction) - between Multiplication and Division, it depends on the order from left to right, the same is true for Addition and Subtraction.

7 + 3(-4)(2) becomes 7 + (-12)(2), which is 7 + (-24). Adding a negative number to a number is the same as subtraction, so 7 + (-24) becomes 7 - 24, which is -17. -17 is less than 0.

For the second problem, -2[12/(-3)] becomes -2(-4), which is +8

For the third problem, (15-7)-(9/3) is 8 - 3, which is +5

For the fourth problem, -5(7+(-14))-30 becomes -5(-7) - 30, which becomes 35 - 30. This equals +5

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Jamal reads 5/8 page in 2/3 minutes. What is the unit rate?

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3 years ago

8/7=x/5 what is the value of x round to the nearest tenth

faust18 [17]

Answer:

Step-by-step explanation:

$\frac{8}{7} = \frac{x}{5}$

To find x first cross multiply

We have

7x = 8 × 5

7x = 40

Divide both sides by 7

That's

$\frac{7x}{7} = \frac{40}{7}$

$x = \frac{40}{7}$

x = 5.7142

We have the final answer as

<h3>x = 5.7 to the nearest tenth</h3>

Hope this helps you

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3 years ago

Read 2 more answers

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Tomtit [17]

Write the equation of the lines in slope-intercept form (y=mx+b)

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$y=\frac{2}{5}x-4$

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8 months ago

Pls help!!!!The probability of hitting a target on a single trial is 40%,Find the probability of hitting the same target 5/8 tim

azamat

Probability hit=40%=4/10
probability no hit=1-p (hit)=1-4/10=6/10
probability= p(hit)+p(hit)+p(hit)+p(hit)+p(hit)+p (no hit)+p (no hit)+p (no hit)
probability=4/10×4/10×4/10×4/10×4/10×6/10×6/10×6/10
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( I think but I'm not 100% sure)

6 0

3 years ago

Fill in the table using this function rule.<br> y=28 - 3x<br> X Y<br> 1<br> 3<br> 4<br> 6

My name is Ann [436]

Answer:

So, you just end up plugging in your numbers.

y = 28 - 3(1)

y = 28-3

y = 25

Y = 28 - 3(3)

y = 28 - 9

y = 19

y = 28 - 3x

y = 28 - 3(4)

y = 28 - 12

y = 16

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y = 28 - 3(6)

y = 28 - 18

y = 10

Step-by-step explanation:

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3 years ago