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3 years ago

Is 15/28 greater or less than 1/2? justify the answer

Mathematics

2 answers:

GaryK [48]3 years ago

8 0

$\dfrac{1}{2}=\dfrac{14}{25}\ \textless \ \dfrac{15}{28}\Rightarrow\boxed{\dfrac{1}{2}\ \textless \ \dfrac{15}{28}}$

Dafna1 [17]3 years ago

6 0

15/28 > 1/2
Half of 28 is 14 so if you have15 parts of 28 itis more than the half

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What is the value of t?

solmaris [256]

Answer:

A) t = -3

Step-by-step explanation:

We have the expression $\frac{(t-12)}{2}=\frac{3t}{2}-3$ and we have to find the value of t.

First we are going to reorder the expression:

$\frac{(t-12)}{2}=\frac{3t}{2}-3\\\\3=\frac{3t}{2}-\frac{(t-12)}{2}\\\\3=\frac{3t-t-(-12)}{2}\\\\3=\frac{2t+12}{2}$

Now we have to multiply each side by 2,

$3=\frac{2t+12}{2}\\\\3.2=\frac{2t+12}{2}.2\\\\6=2t+12$

Subtract (-12) in both sides,

$6=2t+12\\6-12=2t+12-12\\-6=2t$

Divide both sides in 2,

$-6=2t\\\frac{-6}{2} =\frac{2t}{2} \\-3=t$

The answer is option A) t = -3.

6 0

3 years ago

When 1600 is increased by 20% and the resulting number is decreased by y% the answer is 1536. Find the value of y?

svet-max [94.6K]

100% = 1600
120% = 1920

1920/120 = 1536/y
1920y = <span>184320 (cross multiply)
y = 96%
decrease of 24% from 1920</span>

7 0

3 years ago

Good at math & need points? help!!

Greeley [361]

Answer:

Step-by-step explanation:

5 0

3 years ago

If total advertising expenditures on television advertising declined 4.1% to $141.7 billion in the current year, how much was sp

Vanyuwa [196]

Using proportions, it is found that $147.8 billion was spent on television advertising in the previous year.

$x, in billions, was spent on advertising expenditures on television last year.

This year, the amount declined 4.1%, hence it is 100% - 4.1% = 95.9% of last year's amount, that is, 0.959x.

This year spending's is of 141.7 billion, hence, the equation is:

$0.959x = 141.7$

$x = \frac{141.7}{0.959}$

$x = 147.8$

$147.8 billion was spent on television advertising in the previous year.

To learn more about proportions, you can take a look at brainly.com/question/24372153

4 0

3 years ago

Marisol is painting on a canvas that has an area of 180 square inches. The length of the painting is 11/4 times the width. What

Alona [7]

Notice the picture below, see the length "l"?

well $\bf Area=l\times w\qquad 
\begin{cases}
l=\frac{11}{4}w\\
Area=180
\end{cases}\\\\
-----------------------------\\\\
thus
\\\\
180=\cfrac{11}{4}w\times w$

solve for "w", to find the width,

what's the length? well, l = 11/4 w

3 0

3 years ago