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3 years ago

Somebody please help asap

Mathematics

1 answer:

Elena L [17]3 years ago

6 0

Answer:

B. $4x^2 + \frac{3}{2}x - 7$

Step-by-step explanation:

$f(x) = \frac{x}{2} - 3$

$g(x) = 4x^2 + x - 4$

(f + g)(x) = f(x) - g(x)

= $\frac{x}{2} - 3 + 4x^2 + x - 4$

Add like terms

$= 4x^2 + \frac{x}{2} + x - 3 - 4$

$= 4x^2 + \frac{3x}{2} - 7$

$= 4x^2 + \frac{3}{2}x - 7$

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Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.

kolezko [41]

Answer:

Please see attached image

Step-by-step explanation:

We can work on the products of binomials using distributive property to multiply every term of the first binomial by every term of the second one. Finally combine like terms to get the trinomial that results:

1) $(2+a)(2+a)=4+2a+2a+a^2=4+4a+a^2$

2) $(2a+1)(2a+1)=4a^2+2a+2a+1=4a^2+4a+1$

3) $(2a-1)(2a-1)=4a^2-2a-2a+1=4a^2-4a+1$

4) $(2-a)(2-a)=4-2a-2a+a^2=4-4a+a^2$

7 0

3 years ago

If peter can type 80 words in 2 minutes how many words can he type in 5 minutes if he continues to type at the same rate. Show a

klasskru [66]

Answer:

200 words are peter can be type in 5 minutes.

Step-by-step explanation:

As given

If peter can type 80 words in 2 minutes .

i.e

80 words = 2 minutes

Now words type in 1 minutes.

$1\ minutes = \frac{80}{2}\ words$

1 minutes = 40 words

Now calculate number of words are type in 5 minutes.

Words are type in 5 minutes = Number of minutes × Number of words are type in 1 minutes.

Number of minutes = 5 minutes

Number of words are type in 1 minutes = 40 words

Words are type in 5 minutes = 5 × 40

= 200 words

Therefore 200 words are peter can be type in 5 minutes.

4 0

4 years ago

Two points on the line are (0, 4) and (7, 18). Use the points to first determine the slope and y-intercept. Then write the equat

Nadya [2.5K]

9514 1404 393

Answer:

a. m = 2; y intercept = (0, 4); y = 2 x + 4

Step-by-step explanation:

The slope can be found using the formula ...

m = (y2 -y1)/(x2 -x1)

m = (18 -4)/(7 -0) = 14/7

m = 2

The y-intercept is the first given point: (0, 4).

The equation for the line in slope-intercept form is

y = mx + b

Here, we have m=2 and b=4, so the equation is ...

y = 2x +4

6 0

3 years ago

1. What statement describes the relationship between the graph of the equation y = −|x| and the graph of the equation y = −|x| −

NISA [10]

The first one is B because its subtracting one
The second one is B because it would be the opposite reciprocal of 5/3 (-3/5)

5 0

3 years ago

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Lostsunrise [7]

35 cats (70%) 15 dogs (30%)

50 x 70% = 35

50 - 35 = 15 (remaining 30%)

1. Find the amount of cats.
2. There are 50 dogs and cats, 30% are dogs.
3. multiplication
4. Formula shown above

Hope this helps!

8 0

3 years ago