3 years ago

Alexander is drawing a map of the

Mathematics

1 answer:

lukranit [14]3 years ago

4 0

Answer:

500 together and they are all the same

Step-by-step explanation:

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Sonya has 140 beads. how many bags of 10 beads does she need so that she will have 200 beads in all

Vikentia [17]

If Sonya already has 140 beads, she needs 60 beads in order to have a total number of 200 beads. You have to find how many bags (that hold 10 beads) are needed to add up to 60.

140 + 10x = 200
10x = 60
x = 6

Sonya needs 6 bags

7 0

3 years ago

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If there are 300 fish in a pond and 6 of them get eaten how many is left

sweet-ann [11.9K]

Answer:

294

Step-by-step explanation:

8 0

3 years ago

2x2 – 9x + 2 = –1

Reika [66]

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

<u>Discriminant</u>

$b^2-4ac\quad\textsf{when}\:ax^2+bx+c=0$

$\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}$

$\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}$

$\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}$

$2x^2-9x+2=-1$

$\implies 2x^2-9x+3=0$

$\implies a=2, b=-9, c=3$

$\begin{aligned}b^2-4ac &=(-9)^2-4(2)(3)\\& =81-24\\&=57 > 0\implies \textsf{two real roots}\end{aligned}$

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2 years ago

The circumference of a circle is 19.8mm. Find the length of the radius. Give your answer rounded to 1 DP.

Effectus [21]

Circumference of a circle = 2pie*r
= 19.8=2*314*r/100
= 1980 = 628*r
r = 1980/628
r = 3.13
~= 3 cm^2
Hope it helped!!!”!!!
Comment below

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3 years ago

1/2 (n - 4) - 3 = 3 - (2n + 3). Find the value of n.

NikAS [45]

Answer: I think the answer is n=2

Step-by-step explanation:

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2 years ago