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3 years ago

12

Necesito que me ayuden con unas tareas de matematicas de primer grado de secundaria

1 answer:

Alex_Xolod [135]3 years ago

5 0

Answer: i don't know

Step-by-step explanation:

You might be interested in

The average speed of a car during 5 hours is 50 miles per hour. What is the total distance traveled by the car?

Paraphin [41]

Answer:

250 miles

Step-by-step explanation:

So we know that the time (t) equals 5 hours and that the rate (r) equals 50 mph. So knowing that, we can use the formula t*r=distance. We plug in the numbers and we get 250 miles.

Another way to think about this is, since we go 5 hours and 50 miles per hour, every hour we go 50 miles and we do that for 5 hours, so we go 50, 100, 150, 200, 250.

6 0

3 years ago

If Nicholas spends $8.10 on pixie sticks how many pounds did he purchase. Pixie sticks $4.50 per pound show word. Jane measure $

Ira Lisetskai [31]

Answer:

Nicholas bought 1.8 lbs, and Jane bought 3lbs.

Step-by-step explanation:

Divide the total amount by how much it is per pound, so 8.10 divided by 4.50 = 1.8 and 9.75 divided by 3.25= 3

8 0

3 years ago

Read 2 more answers

12, 13, 15, 15, 16, 19,19,19,20,21,25 what is the median?

Olin [163]

The median is the middle number.

The middle number is 19.

Median = 19.

Hope this helped.

4 0

3 years ago

Read 2 more answers

Find the area of the shaded region formed by circle that touches the edges of a rectangle.

disa [49]

Answer:

$266.14 \: {cm}^{2}$

Step-by-step explanation:

In case of rectangle:

Length l = 30 cm

Width w = 14 cm

Since, circle touches the edges (lengths) of the rectangle.

Therefore,

Diameter of circle = 14 cm

So, radius r = 14/2 = 7 cm

Area of the shaded region = Area of rectangle - Area of circle

$= lw - \pi {r}^{2} \\ \\ = 30 \times 14 - 3.14 {(7)}^{2} \\ \\ = 420 - 3.14 \times 49 \\ \\ = 420 - 153.86 \\ \\ = 266.14 \: {cm}^{2}$

6 0

3 years ago

Richard simplified an expression in three steps, as shown:

soldi70 [24.7K]

Answer:

Step 2 because Richard multiply the powers of same base in denominator instead adding powers of same base.

Step-by-step explanation:

We are given that Richard simplified an expression in threes steps

We have to find the incorrect step in simplification of Richard

Step 1: all the exponent are multiplied by 3

$\frac{x^{-4}y^2}{yx^2\cdot x^2y^{-4}}^{3}=\frac{x^{-12}y^6}{y^3x^6\cdot x^6y^{-12}}$

Step 2:The exponents in the denominator are multiplied

$\frac{x^{-12}y^6}{y^3x^6\cdot x^6 y^{-12}}=\frac{x^{-12}y^6}{x^{12}y^{-9}}$

Step 3:The exponents of the same base are subtracted during division

$\frac{x^{-12}y^6}{x^{12}y^{-9}}=x^{-12-12}y^{6+9}$

$=x^{-24}y^{15}$

Richard makes mistake in step 2 when we multiply then power of same base should be added but Richard multiply the powers of same base in denominator.

4 0

3 years ago