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3 years ago

Please answer this IS MY TEST PLEASE ANSWER PLEASE dont give UP-_-

Mathematics

1 answer:

iren2701 [21]3 years ago

7 0

12. for this the equation is SA = 1/2bh * 4 + l*w so 1/2 * 3*2.5=3.75*4+3*3=15+9=24 so the answer is 24
13. 4*3*2 +3*2 *2 +4*2*2=24+12+16=52 so the answer is 52

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What value of c makes the equation true? (PLEASE HELP, and look at the picture)

Cloud [144]

Answer:

$\displaystyle c = 8$

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle \frac{3}{6} = \frac{4}{c}$

Step 2: Solve for c

Simplify [Reduce]: $\displaystyle \frac{1}{2} = \frac{4}{c}$
[Multiplication Property of Equality] Cross-multiply: $\displaystyle c = 8$

8 0

3 years ago

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Which of the following is equivalent to the expression (9x^2y^3)(12x^-3y^5)(2xy)?

VladimirAG [237]

Answer:

$\large\boxed{(9x^2y^3)(12x^{-3}y^5)(2xy)=216y^9}\to\boxed{B.}$

Step-by-step explanation:

$(9x^2y^3)(12x^{-3}y^5)(2xy)=(9\cdot12\cdot2)(x^2x^{-3}x)(y^3y^5y)\\\\\text{Use}\ a^n\cdot a^m=a^{n+m}\\\\=216x^{2+(-3)+1}y^{3+5+1}=216x^0y^9\\\\\text{Use}\ a^0=1\ \text{for any value of}\ a\ \text{except 0}\\\\=216y^9$

6 0

3 years ago

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What is 6÷2(1+2) someone help

In-s [12.5K]

Hopes this helps:

Answer: 9

1. Simplify 1 + 2 to 3.

6 divided by 2 times 3

2. Simplify 6 divided by 2 to 3.

3 times 3

3. Simplify.

9

6 0

2 years ago

Graph: y=|x - 4| + 2

kramer

Answer:

See attached graph.

Step-by-step explanation:

We can graph this with relative ease on the calculator or computer (see attachment) but let's make sure we understand it theoretically and algebraically!

y=|x - 4| + 2

First of all, this is an absolute value function, so it'll look like a v where every input equals its positive output (2, 2) (-3,3) etc. You can't get a negative number with a graph of y=|x| unless you translate it.

Next, there's a -4 inside the abs val. According to the formula y = |x - h| + k, where h is the horizontal shift, this means we need to shift the vertex right 4.

There's a +2 outside the abs val. K is the vertical shift, so we need to shift the vertex up 2.

3 0

3 years ago

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A hot air balloon went from an elevation of 4,064 feet to an elevation of 3,322 feet in 28 minutes. What

ELEN [110]

Answer:

The air balloon descends 26.5 feet per minute

Step-by-step explanation:

Rate of Change

The rate of change is a measure that compares two quantities, usually to know how one variable changes in time.

The hot air balloon was 4,064 feet high and, 28 minutes later, it went to 3,322 feet. We can calculate the rate of descent R by dividing the change of elevation over time:

$\displaystyle R=\frac{3,322-4,064}{28}=\frac{-742}{28}=-26.5$

Thus the air balloon descends 26.5 feet per minute

3 0

3 years ago