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Simora [160]
3 years ago
9

I could use help with these please with the work and an explanation​

Mathematics
1 answer:
Softa [21]3 years ago
5 0

Answer:

x+6

x-9

x²-x

Step-by-step explanation:

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Cody was 165\,\text{cm}165cm tall on the first day of school this year, which was 10\%10% taller than he was on the first day of
Doss [256]

Answer:

165 cm.

Step-by-step explanation:

Let h be the height of Cody on the first day of school last year.

We have been given that Cody was 165 cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

To find the height of Cody on the first day of school last year, we need to find h such that h plus 10% of h equals 165. We can represent this information in an equation as:

h+10\%\text{ of }h=165

h+(\frac{10}{100}*h)=165

h+0.10*h=165

1.10*h=165

Let us divide both sides of our equation by 1.10.

\frac{1.10*h}{1.10}=\frac{165}{1.10}

h=150

Therefore, Cody was 150 cm tall on the first day of school last year.

5 0
4 years ago
Will mark brainliest!!!Using sin in math solve the one circled in green
Tresset [83]

Answer:

x ≈ 32.3

Step-by-step explanation:

Using the sine ratio in the right triangle

sin48° = \frac{opposite}{hypotenuse} = \frac{24}{x} ( multiply both sides by x )

x × sin48° = 24 ( divide both sides by sin48° )

x = \frac{24}{sin48} ≈ 32.3 ( to 1 dec. place )

8 0
3 years ago
Convert 50 degrees F to K.
butalik [34]

Answer:

50 °= 283.15 K

Step-by-step explanation:

4 0
3 years ago
What is the answer for the equation 3(5k+2) + 5= 3k-1
mina [271]

Answer:

  • 12k + 12.

Step-by-step explanation:

=> 3(5k + 2) + 5 = 3k - 1

=> 15k + 6 + 5 = 3k - 1

=> 15k + 11 - 3k + 1

=> 12k + 12

<u>Hence, correct answer is 12k + 12.</u>

7 0
4 years ago
Read 2 more answers
Write an equation in slope intercept form given two points: (3,1),(0,10)
qaws [65]

Answer:

y = - 3x + 10

Step-by-step explanation:

We have to write an equation of a straight line in slope-intercept form that passes through the points (3,1) and (0,10).

Now, the equation of the straight line (using two points form) will be  

\frac{y - 1}{ 1 - 10} = \frac{x - 3}{3 - 0}

⇒ y - 1 = - 3(x - 3)

⇒ y - 1 = 9 - 3x

⇒ y = - 3x + 10 (Answer)

{Since the slope-intercept form of a straight line equation is y = mx + c}

We know the equation of a straight line when any two points on the straight line (x_{1},y_{1}),  (x_{2},y_{2}) are known, will be  

\frac{y - y_{1} }{y_{1} - y_{2}} = \frac{x - x_{1} }{x_{1} - x_{2}}

6 0
3 years ago
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