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2 years ago

Please help tysm!!!!!!!!!!

Mathematics

1 answer:

Sindrei [870]2 years ago

4 0

Answer:

QUESTION 4 is 0.05

Step-by-step explanation:

you divide 1 dollar by the 20 apples.

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Solution of the equation 3x/5+1 = 4x/15+7

Inessa05 [86]

Answer:

$x=18$

Step-by-step explanation:

$\frac{3x}{5} +1=\frac{4x}{15} +7$

$\frac{3x}{5} -\frac{4x}{15} =7-1$

$\frac{9x}{15} -\frac{4x}{15} =6$

$5x/15=6$

$5x=90$

$x=18$

6 0

2 years ago

Jose, baulus, and George are having a disagreement over interest rates. Jose says that 6 3/4% can be expressed as 6.75%. George

otez555 [7]

Answer:

Jose and George are correct

Baulus is incorrect

Step-by-step explanation:

Given

$6\frac{3}{4}$ %

Required

Compare the above expression with

Jose: 6.75%.

George: 0.0675

Baulus: 0.0675%

The expression  $6\frac{3}{4}$ % is given as a mixed fraction;

In Jose's case, he simply converted it to decimal

Converting $6\frac{3}{4}$ % to decimal;

First, we need to convert to improper fraction

$6\frac{3}{4}$ % in improper fraction is $\frac{27}{4}$ %

Then, we divide the numerator by the denominator

$\frac{27}{4}$ % = 6.75%.

Hence, Jose is correct

In George's case, he solved further by removing the % from Jose's answer.

% means divided by 100; In other words, x% means that we divide x by 100

So, 6.75% means we divide 6.75 by 100

$\frac{6.75}{100}$ = 0.0675

Hence, George is also correct

But same can't be said of Baulus;

Baulus converted $6\frac{3}{4}$ % as 0.0675%

This means that he converted $6\frac{3}{4}$ as 0.0675 then he appended it with the percentage sign (%)

Since $6\frac{3}{4}$ is not equal to 0.0675, then we can conclude that Baulus is incorrect

8 0

3 years ago

?????????????!???????!???!?????

Archy [21]

Answer:

249.6

Step-by-step explanation

There are 4 identical equilateral triangle,

we can find the area of one and multiply by 4

area of triangle = $\frac{1}{2} *base*hight=\frac{1}{2}*12*10.4=62.4$

now 62.4*4 = 249.6

6 0

3 years ago

I don't understand this problem

ExtremeBDS [4]

Answer:

45%

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Is RS perpendicular to DF? Select Yes or No for each statement. R (6, −2), S (−1, 8), D (−1, 11), and F (11 ,4) R (1, 3), S (4,7

guajiro [1.7K]

I'll do the first one to get you started.

Find the slope of the line between R (6,-2) and S (-1,8) to get

m = (y2-y1)/(x2-x1)

m = (8-(-2))/(-1-6)

m = (8+2)/(-1-6)

m = 10/(-7)

m = -10/7

The slope of line RS is -10/7

Next, we find the slope of line DF

m = (y2 - y1)/(x2 - x1)

m = (4-11)/(11-(-1))

m = (4-11)/(11+1)

m = -7/12

From here, we multiply the two slope values

(slope of RS)*(slope of DF) = (-10/7)*(-7/12)

(slope of RS)*(slope of DF) = (-10*(-7))/(7*12)

(slope of RS)*(slope of DF) = 10/12

(slope of RS)*(slope of DF) = 5/6

Because the result is not -1, this means we do not have perpendicular lines here. Any pair of perpendicular lines always has their slopes multiply to -1. This is assuming neither line is vertical.

I'll let you do the two other ones. Let me know what you get so I can check your work.

3 0

3 years ago