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svetoff [14.1K]
2 years ago
13

Plz give right answers,and a SIMPLE explanation, thnx! :)

Mathematics
2 answers:
Greeley [361]2 years ago
4 0

Answer:

10

Step-by-step explanation:

so do parentheses first so 12+8 is 20

1/2 of 20 is 10

ehidna [41]2 years ago
3 0

Answer:

  • 10

Step-by-step explanation:

<u>Given</u>

  • 1/2×(12 + 8)

<u>Step 1, complete the parenthesis:</u>

  • 12 + 8 = 20

<u>Step 2, perform multiplication:</u>

  • 1/2*20 = 20/2 = 10

Answer is 10

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The graph shows the amount of money paid when purchasing bags of peanuts at the zoo: What is the constant of proportionality? (4
jolli1 [7]

Answer:

The constant of proportionality is equal to 4

Step-by-step explanation:

The picture of the question in the attached figure

Let

y ----> the total cost in dollars

x ----> the number of bags of peanuts

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

To find out the constant of proportionality, we need to take one point from the graph

take the point (1,4)

Find the value of k

k=\frac{y}{x}

substitute the value of x and the value of y

k=\frac{4}{1}=\$4\ per bag

6 0
3 years ago
It is known that 1.4&lt; square root of 2 &lt;1.5. Find all possible values of the expression 2-square root of 2. How do I find
horsena [70]

Answer:

0.5<2-√2<0.6

Step-by-step explanation:

The original inequality states that 1.4<√2<1.5

For the second inequality, you can think of 2-√2 as 2+(-√2).

Because of the "properties of inequalities", we know that when a positive inequality is being turned into a negative, the numbers need to swap and become negative. So, the original inequality becomes -1.5<-√2<-1.4. (Notice how the √2 becomes negative, too). This makes sense because -1.5 is less than -1.4.

Using our new inequality, we can solve the problem. Instead of 2+(-√2), we are going to switch "-√2" with both possibilities of -1.5 and -1.6. For -1.5, we would get 2+(-1.5), or 0.5. For -1.4, we would get 2+(-1.4), or 0.6.

Now, we insert the new numbers into the equation _<2-√2<_. The 0.5 would take the original equation's "1.4" place, and 0.6 would take 1.5's. In the end, you'd get 0.5<2-√2<0.6. All possible values of 2-√2 would be between 0.5 and 0.6.

Hope this helped!

4 0
2 years ago
Which of the following is false?
bixtya [17]

Answer:

A and C

Step-by-step explanation:

6 0
2 years ago
Find the length of a side of the<br> square shown below.<br> х<br> 6V2<br> X =<br> x = [?]
Leona [35]

Answer:

x=6

Step-by-step explanation:

In a square, its angles are all 90 degrees. So, cutting a square in half into two triangles from corner to corner produces 45 degree angles on both sides. Since the triangles are now 45-45-90 triangles, we can use the rule where the hypotenuse of the triangle is equal to the square root of 2 times the length of either side. So, the side length is 6.

4 0
2 years ago
graph the solutions of the inequality on a number line. Describe the solution to the inequality. p &gt; 4
inysia [295]

Draw out a number line. Make sure 4 is on the number line. At this location, plot an open circle. The open circle indicates "do not include this endpoint as part of the solution set". We shade to the right of this open circle.

Visually this describes all real numbers that are larger than 4.

5 0
2 years ago
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