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3 years ago

Write a fact with the same sum as 7+ 5.

Mathematics

2 answers:

lisov135 [29]3 years ago

6 0

0+12, 11+1, 4x3, 6x2, etc.

Anit [1.1K]3 years ago

6 0

A number that have the same sum of5+6 is 6+6 and equal 12.And there is more

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Find the missing side

Dahasolnce [82]

Step-by-step explanation:

$\cos \: 60 \degree = \frac{x}{11} \\ \\ \therefore \: \frac{1}{2} = \frac{x}{11} \\ \\ \therefore \: x = \frac{11}{2} \\ \\ \: \: \: \: \: \: \huge \red{ \boxed{\therefore \: x = 5.5}} \\$

4 0

3 years ago

Read 2 more answers

A building casts a 17-foot shadow. A 6-foot man standing next to the building casts a 2.5-foot shadow. What is the height, in fe

masha68 [24]

So the way you would find it is a ratio.

1. $\frac{6}{2.5} \frac{x}{17}$
2. =(6)(17)/(2.5)
3. =102/2.5
4. =40.8

So the building would be 40.8 feet tall.

7 0

3 years ago

The equation of line WX is 2x + y = -5. What is the equation of a line perpendicular to line WX in slope-intercept form that con

sveticcg [70]

Answer:

The third choice is the one you want

Step-by-step explanation:

If we are to write the equation of a line perpendicular to WX, we first must determine what the slope of the WX is, because the line perpendicular to WX has a slope that is the flip of the slope of WX with the opposite sign. Solving for y takes care of finding the slope of WX:

2x + y = -5 so

y = -2x - 5

The slope is -2. That means that the reciprocal slope is 1/2. Using that slope along with the coordinates x = -1 and y = -2, we first write the line using point-slope form and then solve it for y. Start by filling in the m, the x value and the y value:

$y - (-2) = \frac{1}{2}(x-(-1))$

Getting rid of the double negatives gives us:

$y+2=\frac{1}{2}(x+1)$

Distributing then gives us:

$y+2=\frac{1}{2}x+\frac{1}{2}$

And finally solving for y (I am going to express the 2 on the left as 4/2 when I move it by subtraction in order to add those fractions):

$y=\frac{1}{2}x+\frac{1}{2}-\frac{4}{2}$

And the final equation in slope-intercept form is:

$y=\frac{1}{2}x-\frac{3}{2}$

8 0

3 years ago

Serena is making an experiment. For that, she needs 20 grams of a 52% solution of salt. She has two large bottles of salt water:

Fudgin [204]

X + y = 20 --> eqn 1
The second equation would be the mass balance shown below:
(x)(0.40) + y(0.70) = 20(0.52) --> eqn 2
Rearranging eqn 1,x = 20 - ySubstitute this to eqn 2:
(20 - y)(0.40) + y(0.70) = 20(0.52)Solve for y,y = 8 grams Finally, solve for x.x = 20 - 8 = 12 grams
Therefore, Serena needs 12 grams of the 40% solution and 8 grams of the 70% solution.

5 0

4 years ago

What is the median of those in the the picture please help

Molodets [167]

Answer:

Median is 24.5

Step-by-step explanation:

Median is the middle number in a set of numbers. If we have two middle numbers, we get the average. And from the question, listing them out, we have this

0,1, 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49.

The middle number here is 24 and 25. Getting their average will be 24.5

5 0

3 years ago