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3 years ago

Can someone please help me with my homework maths please. thanks

Mathematics

1 answer:

mario62 [17]3 years ago

4 0

Answer:

35 blocks are given to the class

Step-by-step explanation:

she has 19 pounds which she divides into 1/2 pounds

19/1/2

38 blocks

she keeps 3 of the blocks and gives the rest away

38-3

35 blocks

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Integers

Llana [10]

Answer:

Option D is not true

Step-by-step explanation:

Whole Numbers (W) = They include Natural numbers (N) and 0.

7 0

3 years ago

Y = x^2 - 4 <br> y= x + 2

Snezhnost [94]

Hopes this help:

Answer: x = 3, -2 & y = 5, 0

Hopes this is the answer that you where looking for if not I am so sorry.

5 0

2 years ago

Joey runs diagonally across a rectangular field. The field had a width of 15 yards and a length of 36 yards. How far did Joey ru

Leya [2.2K]

Answer:

Joey ran 39 yards

Step-by-step explanation:

a²+b²=c²

15²+36²=c²

225+1296=c²

1521=c²

√1521=√c²

39=c

4 0

3 years ago

what is the general form of the equation of a circle with its Center at -2 1 and passing through -4 one

blondinia [14]

Answer:

$\large\boxed{x^2+y^2+4x-2y+1=0}$

Step-by-step explanation:

The standard form of an equation of a circle:

$(x-h)^2+(y-k)^2=r^2$

(h, k) - center

r - radius

The general form of an equation of a circle:

$x^2+y^2+Dx+Ey+F=0$

We have the center (-2, 1). Substitute to the equation in the standard form:

$(x-(-2))^2+(y-1)^2=r^2\\\\(x+2)^2+(y-1)^2=r^2$

Put thr coordinates of the point (-4, 1) to the equation and calculate a radius:

$(-4+2)^2+(1-1)^2=r^2\\\\r^2=(-2)^2+0^2\\\\r^2=4$

Therefore we have the equation:

$(x+2)^2+(y-1)^2=4$

Convert to the general form.

Use $(a\pm b)^2=a^2\pm 2ab+b^2$

$(x+2)^2+(y-1)^2=4\\\\x^2+2(x)(2)+2^2+y^2-2(y)(1)+1^2=4\\\\x^2+4x+4+y^2-2y+1=4\qquad\text{subtract 4 from both sides}\\\\x^2+y^2+4x-2y+1=0$

5 0

3 years ago

A ladder is placed against a wall.

melisa1 [442]

Answer:

Hmm, let me do the problem real quick i will let you know once i get he answwr

Step-by-step explanation:

8 0

3 years ago

Can someone please help me with my homework maths please. thanks ​

Can someone please help me with my homework maths please. thanks