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3 years ago

HELP ME PLEASE!!! 20 POINTS!

Mathematics

1 answer:

Lana71 [14]3 years ago

4 0

Answer:

1. -5°

2. -3 and -4

Step-by-step explanation:

For the first one, it dropped negative 30 degrees in a span of 6 hours. So, we divide - 30 by 6 and we get -5. It dropped negative 5 degrees per hour. For the second one, we factor 12. Negative times negative equals positive so both of the factors are negative. When we factor 12, we get 2, 2, and 3. -3 times -4 equals 12 and it adds up to -7. I hope this helps! Please mark me brainliest!

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Does anyone know how to crack this code?

seraphim [82]

Area of triangle= (base*hieght)/2
T=(5*6)/2=15
T=15
To the right of T = (4*8)/2 = 16
Triangle to the right of T=16
Y=(6*6)/2 = 18
Y=18
A=(5*7)/2 = 17.5
A=17.5
To the right of A = (7*7)/2 = 24.5
A=24.5
E = (6.4*8.5)/2 = 27.2
E = 27.2
I = (2.7*3.6)/2 = 4.86
I = 4.86
N = I cant read N
D = (19*17)/2 = 161.5
D = 161.5
Do you think you can complete the rest?

6 0

3 years ago

Write the equation of a line that passes through (-3/2, -5) and perpendicular to a line that contains (-1, -2) and (-2, -8).

liraira [26]

Answer:

find gradient/slope

-8-(-5) / -2-(-1) = -3/-1

= 3

y=3x+c

perpendicular line formula

m1(m2)= -1

(sub in the gradient before)

3(m2)= -1

m2= -1/3 ( perpendicular line gradient)

y=-1/3x+c

(sub in the coordinate)

-5=-1/3(-3/2)+c

-5=1/2+c

-11/2=c (y intercept)

answer: y= -1/3x - 11/2

3 0

3 years ago

A net is a two-dimensional pattern that can be folded to form a three-dimensional surface. T/F

Nitella [24]

Answer: True

Explanation:

Consider a 3D cardboard box that you can unfold. It would unfold into a 2D net that you can then re-fold back into its 3D form. The 2D net is useful to help visualize and calculate the surface area. The surface area is simply the total area of all the external faces.

4 0

3 years ago

اد<br>قال لwhat is quadratic equation

7nadin3 [17]

Answer:

A quadratic equation is an algebraic equation that involves ax(squared) + bx + c = 0

There will always be a square and A and B

7 0

3 years ago

you go to the nursery and buy some spring bulbs to plant in your yard you decide to buy 30 tulip bulbs and 32 daffodil bulbs for

bixtya [17]

Answer:

The cost of Daffodil bulb is $ 3.5 And

The cost of Tulip bulbs is $ 5

Step-by-step explanation:

Given as :

The total number of tulip bulbs (T) for front yard = 30

The total number of tulip bulbs for back yard = 16

The total number of daffodil bulbs (D) for front yard = 32

The total number of daffodil bulbs for back yard = 40

The amount spend on front yard = $262.00

The amount spend on back yard = $220.00

so, according to question

30 T + 32 D = $ 262

16 T + 40 D = $ 220

Or, 480 T + 512 D = 4192 ...... 1

And 480 T + 1200 D = 6600 ....... 2

Solving eq 1 and 2

Or, ( 480 T + 1200 D ) - ( 480 T + 512 D ) = 6600 - 4192

Or, 688 D = 2408

∴ D = $\frac{2408}{688}$ = $ 3.5

Put The value of D in above eq

480 T + 1200 × (3.5) = 6600

Or, 480 T = 6600 - 4200 = 2400

∴ T = $\frac{2400}{480}$ = $ 5

Hence The cost of Daffodil bulb is $ 3.5 And

The cost of Tulip bulbs is $ 5 Answer

3 0

3 years ago