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4 years ago

Mark true statement(s)

Mathematics

1 answer:

Yuki888 [10]4 years ago

3 0

Answer:

I'm guessing A

sorry if I'm wrong

Step-by-step explanation:

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4 spoons and 3 forks cost $15 4 spoons and 1 fork cost $13 how many do the forks cost?

Wewaii [24]

Let's say that s=spoons and f=forks.

According to this, we can say that:

{4s+3f=15
{4s+f=13

This is a system.

We can then use elimination to solve and isolate the variable:
(4s-3f=15)
- (4s+f=13)

We can then subtract and conclude that:
-4f=2
-f=1/2
f=-1/2

8 0

3 years ago

There are eight boys and seven girls in a class. The teacher randomly selects three different students to answer questions. What

stepladder [879]

the probability is 7/15

Step-by-step explanation:

because there are 7 girls and 8 boys

6 0

3 years ago

When subtracting decimals with the same sign you

Veronika [31]

Answer:

subtract

Step-by-step explanation:

let's say 1.1-1.1 same sign? yea. subtract.

6 0

3 years ago

In 2009, the national debt of a government was about $10.5 trillion. Using 308.0 million as the population for that year, abo

Katarina [22]

Answer:

34091 dollars per person

Step-by-step explanation:

In order to answer the question, you have to divide the amount of debt by the amount of population to obtain the amount of dollars per person.

The debt was $10.5 trillion. A trillion is a thousand billion (1000 multiplied by a billion which is $10^{9}$ in scientific notation)

1000= $10^{3}$

One trillion is $(10^{3})(10^{9})=10^{12}$

The debt is: $ 10.5 x $10^{12}$

The population is scientific notation is: 308.0 x $10^{6}$

Dividing the amount of debt by the amount of population:

$\frac{(10.5)(10^{12})}{(308.0)(10^{6})}=\frac{(10.5)(10^{12-6})}{308.0}=\frac{(10.5)(10^{6})}{308.0}$

Simplifying and expressing it in standard notation:

34090.9 dollars per person

Rounding to the nearest dollar:

34091 dollars per person.

4 0

3 years ago

Are assocative properties true for all intergers? explain

Fudgin [204]

No, Associative proporties are not true for all integers. The deffinition for integer (n) 1. one of the positive or negative numbers 1, 2, 3, act., or zero. Compare whole number

4 0

4 years ago