Ask question

Ask question

All categories

3 years ago

11

Philadelphia, Pennsylvania, is 2,147 miles from Salt Lake city, Utah, and 2,868 miles from Portland, Oregon.What is the differen

ce in the round-trip distances between Philadelphia and each of the other two cities? Explain whether you need an estimate or an exact answer.

1 answer:

Yuki888 [10]3 years ago

3 0

The answer is -721 because 2147 miles -2868 the 2147 is the first that's why I got the answer -721

You might be interested in

Graph the solution set of the inequality 1/4 x >= - 2

Troyanec [42]

Answer:

-8 is one point and the arrow goes to 10

Step-by-step explanation:

6 0

3 years ago

Part A: Factor 2x2c2 + 3xc2 − 35c2. Show your work. (4 points) Part B: Factor x2 + 20x + 100. Show your work. (3 points) Part C:

Paraphin [41]

$A.\\2x^2c^2+3xc^2-35c^2=c^2(2x^2+3x-35)=c^2(2x^2+10x-7x-35)\\\\=c^2[2x(x+5)-7(x+5)]=c^2(x+5)(2x-7)$

$B.\\x^2+20x+100=x^2+10x+10x+100=x(x+10)+10(x+10)\\\\=(x+10)(x+10)=(x+10)^2$

$C.\\x^2-144=x^2-12^2=(x-12)(x+12)\\\\used:\ a^2-b^2=(a-b)(a+b)$

7 0

4 years ago

Solve the equation. Check your solutions<br> |x - 7|= |2x– 8|

Leno4ka [110]

Answer:

1

Step-by-step explanation:

X-8=(2x-8)

x-7=2x-8

collect like terms

x-2x=-8+7

-x=-1

but we are looking for X not -x

so answer is 1

Hope this helped!

5 0

3 years ago

What is the sum of all even numbers 0-175 in algebraic form? If n49=99

Mila [183]

Answer:

$S_{88}=7656$

Step-by-step explanation:

We want to find the sum of all even numbers from 0 to 175.

The series will be:

$0+2+4+6+...+174$

The explicit formula for this is $a_n=2n-2$ , where $n\ge1$ .

We need to find how many terms are there.

$2n-2=174$

$2n=176\\n=88$

The sum of terms is given by:

$S_n=\frac{n}{2}(a_1+l)$

Substitute n=88, $a_1=0$ and l=174 to get:

$S_{88}=\frac{88}{2}(0+174)\\S_{88}=44*174\\S_{88}=7656$

7 0

4 years ago

Given that the f(y) = y - 1 and g(y) = y^3 - 2y - 1, find (gof) (y)I and hence, (gof) (-6).

nordsb [41]

$(g \circ f)(y)=(y-1)^3-2(y-1)-1\\(g \circ f)(y)=y^3 - 3 y^2 + 3 y - 1-2y+2-1\\(g \circ f)(y)=y^3 - 3 y^2 +y\\\\(g \circ f)(-6)=(-6)^3-3\cdot(-6)^2+(-6)\\(g \circ f)(-6)=-216-108-6\\(g \circ f)(-6)=-330$

3 0

3 years ago