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3 years ago

How do the rules for adding and subtracting signed decimals compare with the rules for adding and subtracting integers?

1 answer:

3 0

If sign is the same add and keep the sign

If the sign is different subtract and keep the sign of larger absolute value

Subtraction rules: add opposite and then use addition rules

You might be interested in

Two wires

xz_007 [3.2K]

Answer:

am i suppoesd to do number 7 as well?

Step-by-step explanation:

Two wires

tether a balloon to the ground, as shown. How

high is the balloon above the ground? (Must Use Right

Triangle Trigonometry)

look at picture

4 0

3 years ago

3/7 of 8th graders play sports. is 3/5 of the 8th graders that play sports are boys, what fraction of the 8th graders are boys

Svetach [21]

Answer:

$\dfrac{9}{35}$ is the fraction of 8th graders who are boys.

Step-by-step explanation:

Let total number of 8th graders = $x$

Given that, $\frac{3}{7}$ of 8th graders play sports

$\Rightarrow$ 8th graders who play sports = $\frac{3}{7} \times x$

Also, Given that, $\frac{3}{5}$ of 8th graders that play sports are boys

Number of 8th graders that play sports, and are boys = $\frac{3}{5} \times \text{Number of 8th graders who play sports}$

$\Rightarrow \dfrac{3}{5} \times \dfrac{3}{7} \times x\\\Rightarrow \dfrac{9}{35} \times x$

Hence, the answer is:

$\dfrac{9}{35}$ is the fraction of 8th graders who are boys.

6 0

3 years ago

Anyone know what the answer is

vagabundo [1.1K]

Well for 1.4 will be 1, 2.2 will be 2, 0.7 will be 1, 3.9 will be 4, and 1.8 is 2

7 0

3 years ago

woodland Mound Park sells annual visitors passes for $12.50. Last year the park raised $53,500 in annual visitors pass sales. Ho

maria [59]

Answer:

$4,280\ passes$

Step-by-step explanation:

Let

x -----> the number of annual visitors pass sold

we know that

To find out the number of annual visitor passes sold, divide the total amount raised by the cost of a pass.

The linear equation that represent this problem is

$12.50x=53,500$

Solve for x

Divide by 12.50 both sides

$x=\frac{53,500}{12.50}=4,280\ passes$

5 0

3 years ago

The surface area of a triangular pyramid is 1,936 inches squared. If the dimensions are multiplied by 1/4, what will be the new

rosijanka [135]

Answer:

121 inches squared

Step-by-step explanation:

If the dimensions are multiplied by 1/4, we have that the surface area will by multiplied by (1/4)^2, as the dimensions are in inches and the surface area is in inches squared.

So, If the original surface area is 1936 inches squared, the new surface area will be:

New surface area = 1936 * (1/4)^2 = 1936 / 16 = 121 inches squared.

8 0

3 years ago