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2 years ago

Solve pls brainliest

Mathematics

2 answers:

Kipish [7]2 years ago

6 0

Answer:

5 3/5

Step-by-step explanation:

4/5 x 7 = 28/5 = 5 3/5

$1.Multiple:\frac{4}{5}$ × $7=\frac{4 * 7}{5*1}$ $=\frac{28}{5}$ $=5\frac{3}{5}$

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(28, 5) = 1. In the following intermediate step, it cannot further simplify the fraction result by canceling.

In other words - four fifths multiplied by seven = twenty-eight fifths.

viva [34]2 years ago

4 0

Answer:

5.6 ounces OR 5 and 3/5

Step-by-step explanation:

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Equivalent Fractions: Decide if the Fractions are Equivalent and tell what number was used to reduce them. If they are not, expl

Thepotemich [5.8K]

Answer:

are not equivalent

Step-by-step explanation:

20 isnt in the 3 times table so there is no way to simplify the franction into the other

simpilest form of 10/20 is 2/4

4 0

3 years ago

If i were to run from my house to my school, and it was 3 miles between, then how long would it take?

Triss [41]

Answer:

9 miles

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A marathon is 26.2 miles. What is the least number of times Miguel must run for his total distance run during training to exceed

ziro4ka [17]

Missing part of the question

Miguel has started training for a race. The first time he trains, he runs 0.5 mile. Each subsequent time he trains, he runs 0.2 mile farther than he did the previous time.

What is the arithmetic series that represents the total distance Miguel has run after he has trained n times?

Answer:

The least number of times Miguel must run for his total distance run during training to exceed the distance of a marathon is 17.3 miles

Step-by-step explanation:.

Given parameters

Miguel first run = 0.5 mile

Subsequent run = 0.2 mile

This question is an arithmetic progression.

We'll make use of arithmetic progression formula to solve this

Formula:.

Tn = a + (n - 1)d

Where a = first term

n = number of terms

d = common difference

In this case

a = first run = 0.5 mile

d = subsequent run = 0.2 mile

So, Tn = a + (n - 1)d become

Tn = 0.5 + (n - 1) 0.2

Tn = 0.5 + 0.2n - 0.2

Tn = 0.5 - 0.2 + 0.2n

Tn = 0.3 + 0.2n

The arithmetic series of an arithmetic progression is calculated using

Sn = ½(a + Tn) * n

By substituton, we have

Sn = ½(0.5 + 0.3 + 0.2n) * n

Sn = ½(0.8 + 0.2n) * n

Sn = 0.4n + 0.1n²

Since the race is 26.2 miles then the least number of times is given as

Sn ≥ 26

0.4n + 0.1n² ≥ 26.2

0.1n² + 0.4n - 26.2 ≥ 0

Using quadratic formula

n = (-b ± √(b² - 4ac))/2a

Where b = 0.4 a = 0.1 and C = -26.2

So,

n = -0.4 ± √(0.4² - 4 * 0.1 * ,26.2)/2 * 0.1

n = (-0.4 ± √10.64)/0.2

n = (0.4 ± 3.26)/0.2

n = (0.4 + 3.26)/0.2 or (0.4 - 3.26)/0.2

n = 3.46/0.2 or -2.86/0.2

n = 17.3 or -14.3

Since n can't be negative

n = 17.3 miles

The least number of times Miguel must run for his total distance run during training to exceed the distance of a marathon is 17.3 miles

7 0

3 years ago

Read 2 more answers

(9⋅10

cestrela7 [59]

Answer:

A. -18·10^6

Step-by-step explanation:

The rules of exponents apply to powers of 10 used in scientific notation. The associative and commutative properties of multiplication also apply.

<h3>Application</h3>

(a^b)(a^c) = a^(b+c)

The numerical product is ...

$(9\cdot10^9)\cdot(-2\cdot10^{-3})=(9)(-2)(10^{9-3})=\boxed{-18\cdot10^6}$

Additional comment

Expressed in scientific notation, the result would be ...

$-1.8\cdot10^7$

Your calculator can perform this multiplication for you.

8 0

1 year ago

Please help with this asappppppppll

Alenkinab [10]

We are given with a circle and we need to find the equation of the circle , but first let's recall that , the equation of a circle with radius 'r' and centre at (h,k) is given by ${\bf{(x-h)^{2}+(y-k)^{2}=r^{2}}}$

Now , here as as the circle cuts the +ve x-axis at (9,0) . So , it's radius is 9 units or the 2nd way is to measure the distance from centre of the circle to the point where the circle cuts the graph , as the centre is at Origin , so here (h,k) = (0,0) .Which means that the centre is located at the point whose coordinates are (0,0) which is also known as origin . Now , finding the equation of the circle :-

${:\implies \quad \sf (x-0)^{2}+(y-0)^{2}=(9)^{2}}$

${:\implies \quad \bf \therefore \quad \underline{\underline{x^{2}+y^{2}=81}}}$

This is the required equation of Circle

7 0

3 years ago