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3 years ago

40 POINTS THERE IS MORE THAN 1 ANSWER BRAINLIEST IF CORRECT

Mathematics

1 answer:

mash [69]3 years ago

4 0

Answer:

Whole numbers are also integers. There are other integers which are the opposites of the whole numbers (−1, −2, −3, ...). These negative numbers lie to the left of 0 on the number line. Integers are the whole numbers and their opposites.

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A circle is centered at the point (-7, -1) and passes through the point (8, 7). The radius of the circle is units. The point (-1

padilas [110]

hello :
an equation of the circle Center at the A(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²
in this exercice : a = -7 and b = -1 (Center at: A(-7,-1) )
r = AP.... P(8,7)
r² = (AP)²
r² = (8+7)² +(7+1)² =225+64=289 ...... so : r = 17
an equation of the circle that satisfies the stated conditions.
Center at A(-7,-1), passing through P(8, 7) is :

(x+7)² +(y+1)² = 289

The point (-15,y ) lies on this circle : (-15+7)² +(y+1)² = 289....(subsct : x= -15)
(y+1)² = 225
(y+1)² = 15²
y+1 = 15 or y+1 = -15
y = 14 or y = -16
you have two points : (-15,14) , (-15, -16)

8 0

3 years ago

Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. n2+5/2n

leonid [27]

Answer:

$n^2 + \frac{5}{2}n + \frac{25}{16}$

$(n + \frac{5}{4})^2$

Step-by-step explanation:

Given

$n^2 + \frac{5}{2}n$

Required

(a) Make a perfect square trinomial

(b) Write as binomial square

Solving (a)

Let the missing part of the expression be k;

This gives

$n^2 + \frac{5}{2}n + k$

To solve for k, we need to square half the coefficient of n;

i.e. Since the coefficient of n is $\frac{5}{2}$ , then

$k = (\frac{1}{2} * \frac{5}{2})^2$

$k = (\frac{5}{4})^2$

$k = \frac{25}{16}$

Hence;

$n^2 + \frac{5}{2}n + k$ = $n^2 + \frac{5}{2}n + \frac{25}{16}$

Solving (b)

$n^2 + \frac{5}{2}n + \frac{25}{16}$

Expand $\frac{5}{2}n$

$n^2 + \frac{5}{4}n+ \frac{5}{4}n + \frac{25}{16}$

Factorize

$n(n + \frac{5}{4})+ \frac{5}{4}(n + \frac{5}{4})$

$(n + \frac{5}{4})(n + \frac{5}{4})$

$(n + \frac{5}{4})^2$

Hence:

$n^2 + \frac{5}{2}n + \frac{25}{16}$ = $(n + \frac{5}{4})^2$

3 0

3 years ago

Please help me with both a and b, i am clueless

krek1111 [17]

1. Yes because the first ratio would be 1:5 and the second would be 1:5 because you would divide the first one by 4 and the second by 3
2. And then by would be the same

6 0

3 years ago

The sum of 2 and a number is 20

In-s [12.5K]

Answer:4

Step-by-step explanation:

5 0

3 years ago

Round off then estimate 18.9*5.2

Nataly [62]

18.9 rounded is 19
5.2 rounded is 5

19 * 5 = 95

7 0

3 years ago