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3 years ago

Sally Pays £25 for two tubes of paint a blue tube and a red tube. the blue tube cost £7 more than the red tube.

1 answer:

5 0

Let's say the price of the red tube is x, and the price of the blue tube is x + 7. Then the total cost 25 is the price of the red tube plus that of the blue tube, or x + x + 7.

$2x+7=25 \\ 2x =18 \\ x=9$

The red tube cost £9, and the blue tube cost <span>£16.</span>

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At a local college 100 students were asked about their major fields of study. The results are shown below. What is the probabili

Oksanka [162]

Answer:

7/10

Step-by-step explanation:

To find the probability that a student is a liberal arts or female, we have to add together all of the people who were female or liberal arts majors in the study. If we add those together, (15 + 18 + 17 + 20) we get 70. 70/100 can be simplified to 7/10.

5 0

2 years ago

Read 2 more answers

In this exercise, we show that the orthogonal distance d from the plane p with equation

kodGreya [7K]

Use the cross product to find the orthogonal vector, solve the parametric equation to see at which (t) the point + orthogonal vector intersects the plane, the distance is (t) * norm of vector

3 0

2 years ago

Lucky Joe won $32,000,000 in a lottery. Every year for 10 years he spent 50% of what was left. How much did Lucky Joe have after

aniked [119]

Answer:

31,250

Step-by-step explanation:

32,000,000x0.5= 16,000,000

repeat the process 10 times and you've got 31,250

8 0

2 years ago

This composite shape is a rectangle with a semicircle attached on one end. The diameter of the semicircle is 6 feet.

Ugo [173]

As we can see on the picture we have a rectangle and half of circle.

The areas for half circle and rectangle are:

$A_{rectangle}=a\cdot b \\A_{halfcircle}=\frac{A_{circle}}{2}=\frac{\pi r^2}{2}$

The area of the figure is the sum of the area of half circle and rectangle. Also the height of a rectangle (6ft) is a diameter of a half circle therefore the radius of half circle is 6ft ÷ 2 = 3ft.

Now we calculate the areas.

$A_{rectangle}=10\cdot 6=\underline{60} \\A_{halfcircle}=\frac{3.14\cdot3^2}{2}=\underline{14.13} \\A_{total}=A_{rectangle}+A_{halfcircle} =60+14.13=\boxed{74.13\approx74}$

The area of the figure is approximately 74ft squared.

Hope this helps.

r3t40

3 0

2 years ago

Read 2 more answers

Work out the circumference of this circle.

tigry1 [53]

C=pid
Since d=9m and pi=3.142, C=3.142*9m=28.278
Rounded to 1 decimal point =28.3

3 0

2 years ago