All categories

3 years ago

Please help!

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

Answer:

Step-by-step explanation:

sorry

You might be interested in

PLZ HELP.....The two isosceles triangles are similar.(the big triangle is 22*) what is the value of x?(A.) 22* (B.)79* (C.)101*

Tasya [4]

Not enough information.

6 0

3 years ago

Read 2 more answers

A positive real number is 2 less than another. When 4 times the larger is added to the square of the smaller, the result is 49.

Kobotan [32]

Answer:

The numbers are

$-2+3\sqrt{5}$ and $3\sqrt{5}$

Step-by-step explanation:

Let

x -----> the smaller positive real number

y -----> the larger positive real number

we know that

A positive real number is 2 less than another

$x=y-2$

$y=x+2$ ----> equation A

When 4 times the larger is added to the square of the smaller, the result is 49

$4y+x^2=49$ ----> equation B

substitute equation A in equation B

$4(x+2)+x^2=49$

solve for x

$x^2+4x-41=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+4x-41=0$

$a=1\\b=4\\c=-41$

substitute in the formula

$x=\frac{-4\pm\sqrt{4^{2}-4(1)(-41)}} {2(1)}$

$x=\frac{-4\pm\sqrt{180}} {2}$

$x=\frac{-4\pm6\sqrt{5}} {2}$

$x=-2\pm3\sqrt{5}$

The positive real number is

$x=-2+3\sqrt{5}$

Find the value of y

$y=x+2$

$y=-2+3\sqrt{5}+2$

$y=3\sqrt{5}$

6 0

3 years ago

Find the exact value of the following.<br><br> -3(1.2) 2 =

Shkiper50 [21]

Answer:

-7.2

Step-by-step explanation:

-3 (1.2) 2= -3×1.2×2

-3×1.2×2

-3.6×2

-7.2

-3 (1.2) 2= -7.2

3 0

3 years ago

Read 2 more answers

0.1325 to thr hundredths

viktelen [127]

.13 hope this helps :D

6 0

3 years ago

Read 2 more answers

Please help and explain <br><br> question 12

il63 [147K]

The sunflower is 2.387 meters tall.

The question is asking: which rounding will result in the greatest value?

To see, we need to round 2.387 to meter, tenth meter, and hundredth meter.

Meter - 2 meters

Tenth meter - 2.4 meters

Hundredth meter - 2.39 meters

As you see, rounding to the tenth meter gives the greatest value of 2.4. Therefore, Bahir should use a decimal rounded to the tenth meter.

3 0

3 years ago