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aleksandr82 [10.1K]

1 year ago

8

Question 10: 5 ÷ 5 + 4 × 12

2 answers:

Kazeer [188]1 year ago

8 0

Answer:

60

5 divided 5=1

1+4=5

12x5=60

Step-by-step explanation:

kirill115 [55]1 year ago

6 0

45
5 divided by 5 equals 1
1 plus 4 equals 5
5 times 12 equals 45

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2^x+5 = 3^1-x use logarithms to solve the exponential equation. round answer to 3 decimal places.

marysya [2.9K]

$2^{x+5}=3^{1-x}\ \ \ \ \ /log_2()\\\\log_22^{x+5}=log_23^{1-x}\\\\x+5=(1-x)log_23\\\\x+5=log_23-xlog_23\\\\x+xlog_23=log_23-5\\\\x(1+log_23)=log_23-5\ \ \ \ /:(1+log_23)$

$x=\frac{log_23-5}{1+log_23}\\-------------\\log_23\approx1.5849625\\----------------\\x\approx\frac{1.5849625-5}{1+1.5849625}\approx-1.321$

8 0

2 years ago

Read 2 more answers

Please help I have no one to explain this to me

seraphim [82]

Answer:

y= -1/2x+5 , y= -4x -2

Step-by-step explanation:

im not very sure

7 0

2 years ago

(−5)3x7(yz)4 / (3)2x2y8z2

g100num [7]

Answer:

$\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}$

Step-by-step explanation:

Given:

The expression to simplify is given as:

$\frac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}$

In order to simplify this, we have to use the law of indices.

1. $(ab)^m=a^mb^m$

So, $(yz)^4=y^4z^4$

Substitute this value in the above expression. This gives,

$=\dfrac{(-5)3x^7y^4z^4}{(3)2x^2y^8z^2}\\\\\\=\dfrac{-15x^7y^4z^4}{6x^2y^8z^2}......(-5\times 3=15\ and\ 3\times 2=6)$

Now, we use another law of indices.

2. $\frac{a^m}{a^n}=a^{m-n}$

So, $\frac{x^7}{x^2}=x^{7-2}=x^5,\frac{y^4}{y^8}=y^{4-8}=y^{-4}, \frac{z^4}{z^2}=z^{4-2}=z^2$

Substitute these values in the above expression. This gives,

$=\frac{-15}{6}\times x^5\times y^{-4}\times z^2\\\\=\frac{-5x^5y^{-4}z^2}{2}$

Finally, we further simplify it using the law $a^{-m}=\frac{1}{a^m}$

So, $y^{-4}=\frac{1}{y^4}$

Therefore, the given expression is simplified as:

$\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}$

5 0

2 years ago

(1 pt) What is the measure of ∠Z? A. 57° B. 65° C. 94° D. 115°

Anestetic [448]

Hi it is 57 is a becase use a protractor

7 0

2 years ago

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Describe the transformation that changes triangle ABC to triangle A'B'C

Nonamiya [84]

It is a down shift of 3.
Also written as (x, y-3)

4 0

2 years ago