3 years ago

If the temperature starts at -5 and then rises 13 degrees, what is the new temperature?

Mathematics

1 answer:

ladessa [460]3 years ago

5 0

Answer:

The awnser is 9 degrees.

Step-by-step explanation:

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How do you simplify this and write as a polynomial in standar form? (x-9)3x-7)+(3x^2-5x+2)

nasty-shy [4]

Answer:

Standard form of $(x-9)(3x-7) + (3x^{2} - 5x+2)$ $=6x^{2} - 39x + 65$

Step-by-step explanation:

Here, the given expression is $(x-9)(3x-7) + (3x^{2} - 5x+2)$

Now, simplifying the above expression in parts, we get

$(x-9)(3x-7) = 3x^{2} - 7x -27x + 63 = 3x^{2} - 34x + 63$

hence, combining both parts:

$(x-9)(3x-7) + (3x^{2} - 5x+2)$ $=(3x^{2} -34x +63) + (3x^{2} - 5x+2)$

= $6x^{2} - 39x + 65$

The above expression is of the STANDARD FORM: $ax^{2} +bx + c$

Hence, the standard form of $(x-9)(3x-7) + (3x^{2} - 5x+2)$ $=6x^{2} - 39x + 65$

6 0

4 years ago

Write an expression to<br> represent the perimeter of<br> the rectangle:<br> 3* +10<br> * +5

Schach [20]

Answer:

the perimeter is 18

Step-by-step explanation:

3 0

3 years ago

I honestly dont know the answer for this

babunello [35]

The picture is blurry

6 0

3 years ago

Please help me solve this

GalinKa [24]

Complementary angles add up to 90 degrees.

Which means.. the equation is
8x-23+7x-7=90
Combine like terms you should get
15x-30=90
Add 30 on both sides
15x=120
Divide 15 x=8
Plug in 8 to (8x-23)
8(8)=64-23=41
m

8 0

3 years ago

-8(6+X) + 4(2x + 7) = 0

Talja [164]

Answer:

-20 = 0

Step-by-step explanation:

-8 (6 + x) + 4 (2x + 7) = 0

-48 - 8x + 8x + 28 = 0

-20 = 0

3 0

3 years ago