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3 years ago

18. There are 8 teachers going to the science museum. If each teacher pays

Mathematics

1 answer:

Marrrta [24]3 years ago

6 0

Answer:

120$ altogether

Step-by-step explanation:

There are 8 teachers and they have to pay 15 dollars so do

8×15=120

15+15+15+15+15+15+15+15=120

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Tell weather -3>-x/5; x =10 is a solution of inequality

chubhunter [2.5K]

Answer: $\begin{bmatrix}\mathrm{Solution:}\:&\:x>15\:\\ \:\mathrm{Interval\:Notation:}&\:\left(15,\:\infty \:\right)\end{bmatrix}$

Step-by-step explanation:

$-3>-\frac{x}{5}$

$-\frac{x}{5}$

$5\left(-\frac{x}{5}\right)$

$-x$

$\left(-x\right)\left(-1\right)>\left(-15\right)\left(-1\right)$

$x>15$

4 0

3 years ago

Read 2 more answers

What is the value of x in the isosceles trapezoid below

Nookie1986 [14]

Answer:

D. 13

Step-by-step explanation:

From the diagram, $\angle BAD=2x\degree$ and $\angle BCD=(10x+24)\degree$

In an isosceles trapezium, the base angles are equal.

This implies that $\angle ABC=\angle BAD$ $\implies \angle ABC=2x\degree$

The side length CB of the trapezoid is a transversal line because CD is parallel to AB.

This means that $\angle ABC=2x\degree$ and $\angle BCD=(10x+24)\degree$ are co-interior angles.

Since co-interior angles are supplementary, we write and solve the following equation for $x$ .

$2x\degree+(10x+24)\degree=180\degree$

Group similar terms

$2x+10x=180-24$

Simplify both sides of the equation.

$12x=156$

Divide both sides by 12

$\frac{12x}{12}=\frac{156}{12}$

$\therefore x=13$

The correct answer is D.

8 0

3 years ago

Renting a jet ski at Jerry's Water sports cost $20.00 per hour plus a one-time fee of $8.00. Renting jet skis from splash of fun

Korolek [52]

Answer:

1.6 hours

Step-by-step explanation:

The computation of the number of hours is shown below:

For water sports

= 20x + 8

And,For splash of fun

= 25x

Now the cost of both would be same

i.e.

20x + 8 = 25x

8 = 5x

x = 1.6 hours

4 0

3 years ago

What is the length of the longer side in this triangle

Elena L [17]

Did you notice the little box with corners marked in the angle down at the bottom ?
That angle is a right angle, and this triangle is a right triangle !

This piece of information is a big help. It breaks the problem wide open.
You know that in order to find the longest side of a right triangle . . .

-- Square the length of one short side.
-- Square the length of the other short side.
-- Add the two squares together.
-- Take the square root of the sum.

One short side=48. Its square = 2,304.
The other short side=48. Its square = 2,304.
Add the two squares: 2,304 + 2,304 = 4,608

The square root of the sum = √4,608 = 67.88 (rounded)

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3 years ago

Which of the following best describes the science of ecology?

erica [24]

I would go with C
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3 years ago