All categories

2 years ago

Guys please I really need help asap!

Mathematics

1 answer:

Marrrta [24]2 years ago

8 0

Answer:

7x+5x=11x-15

Step-by-step explanation:

You might be interested in

15 POINTs_ NEED ASAP!

sleet_krkn [62]

Answer:

Step-by-step explanation:

1 TRUE

A number is always 100% Anyting bigger than 100% is going to be a bigger number

Anything smaller than 100% is a smaller number

2FALSE 5/100 = 0.05 and NOT 0.5

0.5% is the same as thalf of 100% = 50%

50/100 = 5/10 = 0.5

6 0

2 years ago

han exit showed that 7 out of every 8 voters cast a ballotin favor of an amendment to a city charter. at this rate, how many peo

stepladder [879]

$298000 \div 8 = 37250 \\ 37250 \times 7 = 260750$
260,750 voters cast a ballot in favor.

4 0

3 years ago

A classroom board is 23 inches wide and 17 inches tall. Juan

natima [27]

Answer:

80 inches

Step-by-step explanation:

12 x 7=34

23 x 2=46

34+46=80 inches

6 0

2 years ago

Use the graph of the line to answer the questions

liraira [26]

Answer:

What is an equation of the line in point-slope form?

y + 1 = (1/3)(x + 2)

How can the point-slope form be written in function notation?

f(x) = (1/3)x - (1/3)

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Factorise 2x^2 - 3x -2 < 0

Galina-37 [17]

Step 1: Factor $2 x^{2} - 3x -2$
1. Multiply 2 by -2, which is -4.
2. Ask: Which two numbers add up to -3 and multiply to -4?
3. Answer: 1 and -4
4. Rewrite $-3x$ as the sum of $x$ and $-4x$

$2 x^{2} +x-4x-2\ \textless \ 0$

Step 2: Factor out common terms in the first two terms, then in the last two terms.

 $x(2x+1)-2(2x+1)\ \textless \ 0$

Step 3: Factor out the common term $2x+1$

$(2x+1)(x-2)\ \textless \ 0$

Step 4: Solve for $x$

1. Ask: When will $(2x+1)(x-2)$ equal zero?
2. Answer: When $2x + 1 = 0$ or $x-2=0$
3. Solve each of the 2 equations above:

 $x=- \frac{1}{2} ,2$

Step 5: From the values of $x$ above, we have these 3 intervals to test.
x = < -1/2
-1/2 < x < 2
x > 2

Step 6: Pick a test point for each interval

For the interval $x\ \textless \ - \frac{1}{2} 
$
Lets pick $x=-1.$ Then, $2(-1) ^{2} -3 * -1 -2 \ \textless \ 0$
After simplifying, we get $3\ \textless \ 0$ , Which is false.
Drop this interval.

For this interval $- \frac{1}{2} \ \textless \ x\ \textless \ 2$
Lets pick $x=0$ . Then, $2* 0^{2} - 3 * 0-2\ \textless \ 0$ . After simplifying, we get $-2\ \textless \ 0,$ which is true. Keep this interval.

For the interval $x\ \textgreater \ 2$

Lets pick $x = 3.$ Then, $2 * 3 ^{2} -3*3-2\ \textless \ 0.$ After simplifying, we get $7\ \textless \ 0$ , Which is false. Drop this interval.

.Step 7: Therefore,
$- \frac{1}{2} \ \textless \ x\ \textless \ 2$

Done! :)

4 0

3 years ago