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3 years ago

Does anyone know how to do 6? i’m dying over here

Mathematics

1 answer:

exis [7]3 years ago

7 0

Answer:

100ft

Step-by-step explanation:

5 over 2 so u do 5x2= 10

then 25 + 70 = 90

90+10= 100ft

HOPE I HELPED...

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The amazon river is about 6,516 kilometers long the mississipi river is about 3,775 kilometers long what is the difference in ki

MrMuchimi

6,516 - 3,775 = 2,741 kilometers

4 0

3 years ago

If the diagonal of a square is 12 to the square root of two then what is the area of the square

erastovalidia [21]

Answer:

Let there be a square ABCD with diagonal AC=12 root 2 cm

Since angles of a square are all 90 degrees

pythagoras theoream

AB^2+BC^2=AC^2

Since all sides of square are equal

2AB^2=(12 root 2)^2

2AB ^2=144*2

AB^2=144

AB= root 144=12 cm

area of square = s^2 =12^2 = 144cm^2

hope it helps

Step-by-step explanation:

3 0

3 years ago

Peter's farm has 160 meters of fencing, and he wants to fence a rectangular field thatborders a straight river. He needs no fenc

Likurg_2 [28]

ANSWER

3200 m²

EXPLANATION

Peter wants to build a fence around a rectangular field, except for one side because the river is there,

So, the total perimeter of the fence is,

$P=W+W+L=2W+L$

And this is equal to 160 m. Solving for L,

$160=2W+L\text{ }\Rightarrow\text{ }L=160-2W$

The area of this field is,

$A=WL$

Replace L with the expression we found from the perimeter,

$A=W(160-2W)=160W-2W^2$

The area is given by a quadratic function whose leading coefficient is negative, which means that the graph is a downward parabola and, therefore, the vertex is the maximum value of the area.

The x-coordinate of the vertex is given by,

$f(x)=ax^2+bx+c\text{ }\Rightarrow\text{ }x_{vertex}=\frac{-b}{2a}$

In this case, x is W, a = -2, and b = 160, so the width of the field for the maximum area is,

$W_{vertex}=\frac{-160}{2(-2)}=\frac{160}{4}=40m$

And the length when W = 40 is,

$L=160-2W=160-2\cdot40=160-80=80m$

And the area is,

$A=WL=40m\cdot80m=3200m^2$

Hence, the largest area of Peter's farm that can be fenced is 3200 square meters.

5 0

1 year ago

Which can be multiplied?

elena55 [62]

Answer:

B) BD

Step-by-step explanation:

The number of columns of the first matrix (2nd dimension) must match the number of rows of the second matrix (1st dimension). When you write the dimensions together, the two middle numbers must be the same.

AB ⇒ (3x2) × (3x5) . . . . 2 ≠ 3, so cannot be multiplied

BD ⇒ (3x5) × (5x7) . . . . 5 = 5, so can be multiplied

CD ⇒ (2x3) × (5x7) . . . . 3 ≠ 5, so cannot be multiplied

DD ⇒ (3x5) × (3x5) . . . . 3 ≠ 5, so cannot be multiplied

8 0

3 years ago

I need help with this question, I attached a file, so it’s easier to read.

katen-ka-za [31]

Hello there!

The median is the middle of the data set. Since we only have 7 numbers, we can arrange it from greatest to least, however the program has already done that. So, to find the median for this data set, all we have to do is simply find the middle number. The median would be 9 for this data set.

6 0

3 years ago

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