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3 years ago

The temperature changed from 8 degrees to 3 degrees. How much did the temperature change by?

Mathematics

2 answers:

s344n2d4d5 [400]3 years ago

5 0

Answer:

Step-by-step explanation:

5degrees

liberstina [14]3 years ago

4 0

The answer should be 5 degrees. The temperature starts at 8 degrees and decreased to 3 degrees. Therefore you find the missing addend which in this case is 5 degrees. 8-3=5

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The expression 27 + 45 as a product using the GCF and distributive property.

Bogdan [553]

Answer:

(a) By Greatest Common Factor: (27 + 45 ) = 3( 9 + 15)

(b) By distributive property: (27 + 45 ) = 9(3) + 9(5)

Step-by-step explanation:

Here, the given expression is 27 + 45 .

Now, by Prime Factorization:

27 = 3 x 3 x 3

45 = 3 x 3 x 5

Here, the 3 is the ONLY prime common factor.

So, the Greatest Common Factor = 3

⇒ (27 + 45 ) = 3( 9 + 15)

Hence, by Greatest Common Factor: (27 + 45 ) = 3( 9 + 15)

Now, by distributive property:

A( B + C) = AB + AC

Here, in the given expression:

(27 + 45 ) = 9 ( 3 + 5) = 9(3) + 9(5)

or, (27 + 45 ) = 9(3) + 9(5)

Hence, by distributive property: (27 + 45 ) = 9(3) + 9(5)

5 0

4 years ago

I need help ASAP,, pleaseeee

jolli1 [7]

Answer:

1a) (-7,-3)

1b) (7,3)

1c) (3,-7)

3) 2 (180)

4) sorry I can't figure this one out

5) If it says 180° about the origin then it is (-5,10) if it isn't about the origin the say what it is in the comments and I will try to look at it again

Step-by-step explanation:

8 0

4 years ago

SUSTITUTION 3X-6Y=2 5X+4Y=1

Montano1993 [528]

3x - 6y = 2
5x + 4y = 1

(-1/3, -1/6)

~Hope I helped!~

6 0

3 years ago

Need to show my work

dalvyx [7]

Answer:

$\large\boxed{x=\dfrac{5}{4},\ y=\dfrac{15}{16}}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=\dfrac{3}{4}x&(1)\\\dfrac{5}{2}x+2y=5&(2)\end{array}\right\\\\\text{Substitute}\ (1)\ \text{to}\ (2):\\\\\dfrac{5}{2}x+2\left(\dfrac{3}{4}x\right)=5\\\\\dfrac{5}{2}x+\dfrac{3}{2}x=5\\\\\dfrac{5+3}{2}x=5\\\\\dfrac{8}{2}x=5\\\\4x=5\qquad\text{divide both sides by 4}\\\\x=\dfrac{5}{4}$

$\text{Put the value of}\ x\ \text{to (1)}\\\\y=\dfrac{3}{4}\cdot\dfrac{5}{4}\\\\y=\dfrac{15}{16}$

4 0

4 years ago

Read 2 more answers

A line intersects the points (-23, -17) and (-13, -7). Find the slope of the line.

dolphi86 [110]

The slope of a line through points $A(x_1, y_1)$ and $B(x_2, y_2)$ is :

$\displaystyle{ \frac{y_2-y_1}{x_2-x_1}$

or

$\displaystyle{ \frac{y_1-y_2}{x_1-x_2}$ ,

it is the same thing, BUT it it always y's over x's and always in the same order of 1 and 2:

don't write: $\displaystyle{ \frac{y_1-y_2}{x_2-x_1}$

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The slope of the line through the points (-23, -17) and (-13, -7) is :

 $\displaystyle{ \frac{-17-(-7)}{-23-(-13)}= \frac{-17+7}{-23+13}= \frac{-10}{-10}=1$


Answer: 1

3 0

4 years ago