All categories

4 years ago

What is the solution to the equation x + 2.15 = –3.2?

Mathematics

2 answers:

Amanda [17]4 years ago

6 0

So, first we have to isolate x.

x+2.15=-3.2
-2.15 -2.15 Subtract 2.15 from both sides.
x= -5.35

Hope this helps ;)

larisa86 [58]4 years ago

4 0

X = -5.35

Sorry if I'm wrong

You might be interested in

All rectangles are rhombuses. TrueFalse

Nezavi [6.7K]

Answer:

No, not every rectangles are rhombuses

Step-by-step explanation:

Rhombus has all its sides equal, but all its angles are not equal. However, opposite angles are equal.

While rectangle has all its angles equal, but all its sides are not equal. However, opposite sides are equal.

4 0

3 years ago

Explain the mistake<br> 3.5 times by 10 = 3.50

natulia [17]

3.5 × 10 = 35.0
The mistake is that you only added a zero to the answer (3.5 -> 3.50), but you forgot to replace the point in your answer (because 3.50 is wrong and 35.0 is correct). Hence, you should have replaced to point, by moving it one spot to the right.

4 0

4 years ago

How many lines are symmetry

VladimirAG [237]

Answer:

specify which shape's symmetry do you want

6 0

3 years ago

Read 2 more answers

A new car that sells for $18.000 depreciates at a rate of 25% per year. Find the value of the car after 4 years ?

Rom4ik [11]

Answer:

After 4 years, the value of the car would be of $5695.31.

Step-by-step explanation:

The formula for compound interest works perfectly in this case:

$a = p {(1 + \frac{r}{n} )}^{nt}$

As in this case the repetitions per annum are just 1 (yearly), we can ignore the n.

Replacing variables with our values, a yields the depreciated value:

$a = 18000 {(1 - 0.25)}^{4} \\ a = 18000 {(0.75)}^{4} \\ a = 18000(0.31640625) \\ a = 5,695.3125 = 5695.31$

4 0

3 years ago

What is the equation of the line that passes through the point (4,3) and has a slope<br> of 1?

Mamont248 [21]

Answer (<u>assuming it can be in point-slope form)</u>:

$y-3 = 1(x-4)$

Step-by-step explanation:

Use the point-slope formula $y-y_1 = m (x-x_1)$ to write the equation of the line. Substitute real values for $m$ , $x_1$ , and $y_1$ in the formula.

Since $m$ represents the slope, substitute 1 in its place. Since $x_1$ and $y_1$ represent the x and y values of a point the line intersects, substitute the x and y values of (4,3) in its place. Substitute 4 for $x_1$ and 3 for $y_1$ . This gives the following equation and answer in point-slope form:

$y-3 = 1(x-4)$

5 0

3 years ago