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3 years ago

What is Z x-2, when x=2 and z=2

Mathematics

2 answers:

bija089 [108]3 years ago

7 0

Answer:

Step-by-step explanation:

2x2-2=2

yawa3891 [41]3 years ago

4 0

2 x 2-2 because everytbing is just two

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The present ages of hero and hero in the ratio 3 is to 4 5 years from now their ratio of their ages will be 4 is 25 find the pre

Kisachek [45]

Answer:

Presently; Veeru is 15 and Neeru is 20

Step-by-step explanation:

Given

See comment for proper format of question

Let their present ages be x and y

So:

$x : y = 3 : 4$

5 years time, the ratio will be:

$x + 5: y + 5= 4 : 5$

Required

Their present ages

Express both ratios as fractions

$x : y = 3 : 4$ becomes

$\frac{x}{y} = \frac{3}{4}$

and

$x + 5: y + 5= 4 : 5$ becomes

$\frac{x+5}{y+5} = \frac{4}{5}$

Make x the subject in: $\frac{x}{y} = \frac{3}{4}$

$x = \frac{3}{4}y$

$x = 0.75y$

Cross multiply in $\frac{x+5}{y+5} = \frac{4}{5}$

$5(x + 5) = 4(y + 5)$

Substitute $x = 0.75y$

$5(0.75y + 5) = 4(y + 5)$

Open brackets

$3.75y + 25 = 4y + 20$

Collect like terms

$3.75y -4y = -25 + 20$

$-0.25y = -5$

Divide by -0.25

$y = 20$

Substitute $y = 20$ in $x = 0.75y$

$x = 0.75 * 20$

$x = 15$

8 0

3 years ago

Please help! thanks!

9966 [12]

Yes, it is.
2(3) - 3(2) = 0
2(3) + 2 = 8

6 0

3 years ago

amanda, lisa, and raquel together sold 54 tickets for the school play. amanda sold 22 tickets and lisa sold 14 tickets. how many

igor_vitrenko [27]

18 Is the correct answer. Add up 22 and 14 and you get 36.54 minus 36 is 18.Hope this helps somehow.:)

4 0

3 years ago

Read 2 more answers

Use the discriminant to determine the number of real solutions to the quadratic equation.

Y_Kistochka [10]

The answer is 1

Use the discramnt formula

${b {}^{2} - 4ac }$

Where a is 81, B is 18, and c is 1

We get

$18 {}^{2} - 4(81)(1)$

We then get 324-324=0

Which equal 0. Since the discramnt produce 0, the number of solution is one and repeated.

3 0

3 years ago

triangle ABC is similar to triangle nLMN by the AA Similaroty Postulate. Also , m<A=90° and m<C=4(m<M). What is m<M?

Sunny_sXe [5.5K]

Answer:

m<M = 18 degrees

3 0

3 years ago