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3 years ago

Plz help me I don’t understand why it’s wrong.

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

7 0

5x - 2

Five times a number (5x) decreased (-) by two (2)

2x + 5

Twice a number (2x) increased (+) by seven (7)

7x + 2

Two more (+2) than the product of a number and 7 (7x)

2x - 5

The difference (-) of two times of number (2x) and five (5)

2x + 7

Twice a number (2x) increased by seven (+7)

balu736 [363]3 years ago

3 0

5x - 2: five times a number decreased by 2

2x + 5: five more than two times a number

7x + 2: two more than the product of a number and 7

2x - 5: the difference of two times a number and 5

2x + 7: twice a number increased by 7

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If the expression x^{-\frac{3}{2}}y\sqrt{36xy^2}x − 2 3 y 36xy 2 is written in the form ax^by^cax b y c , then what is the p

Mekhanik [1.2K]

Answer:

-12

Step-by-step explanation:

The given expression is

$x^{-\frac{3}{2}}y\sqrt{36xy^2}$

We have to rewrite the given function in the form of

$ax^{b}y^c$ ....(i)

then we have to find the product of a,b and c.

The given expression can be rewritten as

$x^{-\frac{3}{2}}y\sqrt{36}\sqrt{x}\sqrt{y^2}$

Using properties of exponents we get

$x^{-\frac{3}{2}}y6x^{\frac{1}{2}}y$ $[\because \sqrt[n]{a}=a^{\frac{1}{n}}]$

$6x^{-\frac{3}{2}+\frac{1}{2}}y^{1+1}$ $[\because a^ma^n=a^{m+n}]$

$6x^{-1}y^{2}$ ...(ii)

On comparing (i) and (ii), we get

$a=6,b=-1,c=2$

Product of a,b and c is

$abc=(6)(-1)(2)=-12$

Therefore, the product of a,b, and c is -12.

7 0

4 years ago

What number must multiply each side of the equation 25x=10 to produce the equivalent equation x = 25?

insens350 [35]

Answer:

Multiply both sides by $\frac{5}{2}$

Step-by-step explanation:

Given

$\frac{2}{5}x = 10$

Required

Get an equivalent of $x = 25$

To do this, we simply multiply through by $\frac{5}{2}$

$\frac{5}{2} * \frac{2}{5}x = 10 * \frac{5}{2}$

$\frac{5*2}{2*5} x = 10 * \frac{5}{2}$

$\frac{10}{10} x = 10 * \frac{5}{2}$

$\frac{1}{1} x = 10 * \frac{5}{2}$

$x = 10 * \frac{5}{2}$

$x =\frac{10*5}{2}$

$x =\frac{50}{2}$

$x = 25$

5 0

3 years ago

Mr Smith baked 3 trays of 12 cookies. after they cooled he divided the cookies equally into 4 bags . how many cookies did Mr. Sm

wariber [46]

Cookies baked = 12 × 3 (number of trays) = 36
Bags = 4
In 4 bags = 36 cookies
in 1 bag = 36/4 = 9 cookies (divide both sides by 4)
SO 9 COOKIES WERE PLACED IN EACH BAG

hope this helped :)

7 0

3 years ago

Do this one pls pls pls please

Nataliya [291]

Answer:

its about 7.000

4 0

3 years ago

Alexa bought a pack of 12 cookies for $3.50 from the supermarket. How many packs of cookies can she buy for $17.50

Sonja [21]

Answer:

she can buy 5 packs of cookies

Step-by-step explanation:

17.50/3.50=5

hope this helped ;D

4 0

3 years ago