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3 years ago

2+2

Mathematics

2 answers:

Sindrei [870]3 years ago

7 0

Answer:

Step-by-step explanation:

you were supposed to put 4 as the answer instead of writing 3+1 although it's still 4 but the question you're asked is 2+2 which is 4

erica [24]3 years ago

4 0

Answer is four, because it’s asking for an answer, not a problem

Hope this um....helps :p

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Marcus is running around a track that is 3/8 of a mile long. If he runs around the track 4 1/2 times, how many miles will he hav

zepelin [54]

Answer:

1 and 11/16 miles

Step-by-step explanation:

running around once is 3/8 miles, 4 1/2 is the same as 9/2

9/2 * 3/8 = (9*3)/(2*8) = 27/16, or 1 and 11/16

3 0

3 years ago

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If you know the area and the base of a triangle, how can you find the height? Use the drop?down menus to explain your answer.

Vikki [24]

Answer:

h = $\frac{2A}{b}$

Step-by-step explanation:

Area (A) of a triangle = $\frac{1}{2}$ × base (b) × height (h)

i.e A = $\frac{1}{2}$ bh

h = $\frac{2A}{b}$

5 0

4 years ago

Find the derivative using the limit process of f (x) = - 10x

zubka84 [21]

Answer:

$\frac{d}{dx} f(x) =-10$

General Formulas and Concepts:

Calculus

Derivative Notation
Definition of a Derivative: $\lim_{h \to 0} \frac{f(x+h)-f(x)}{h}$

Step-by-step explanation:

Step 1: Define

f(x) = -10x

Step 2: Find Derivative

Substitute: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10(x + h)-(-10x)}{h}$
Distribute -10: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10x -10h-(-10x)}{h}$
Distribute -1: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10x -10h+10x}{h}$
Combine like terms: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10h}{h}$
Divide: $\frac{d}{dx} f(x)= \lim_{h \to 0} -10$
Evaluate: $\frac{d}{dx} f(x)=-10$

3 0

3 years ago

Length of the hypotenuse of the triangle to the nearest tenth of a metre

Lemur [1.5K]

Answer:

The length of the hypotenuse is 2.4m

Step-by-step explanation:

well to start we have to know the relationship between angles, legs and the hypotenuse

α = 55°

o: opposite = 2.0m

h: hypotenuse

sin α = o/h

cos α= a/h

tan α = o/a

we see that it has (angle, hypotenuse, opposite)

we look at which meets those data between the sine, cosine and tangent

is the sine

sin α = o/ah

Now we replace the values and solve

sin 55 = 2.0/h

0.81915 = 2.0/h

h = 2.0 / 0.81915

h = 2.4415 m

round to the nearest tenth

h = 2.4415 = 2.4 m

The length of the hypotenuse is 2.4m

5 0

4 years ago

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Which is the simplified form of the expression (StartFraction (x Superscript negative 3 Baseline) (y squared) Over (x Superscrip

Vlad [161]

Answer:

The simplified form of the expression is $\frac{1}{x^{7} y^{4}}$ .

Step-by-step explanation:

The expression is:

$\frac{x^{-3}\cdot y^{2}}{x^{4}\cdot y^{6}}$

The division rule of exponents is:

$a^{m}\div a^{n}=a^{m-n}$

The negative exponent rule is:

$a^{-m}=\frac{1}{a^{m}}$

Simplify the expression as follows:

$\frac{x^{-3}\cdot y^{2}}{x^{4}\cdot y^{6}}=[x^{-3-4}]\times [y^{2-6}]$

$=x^{-7}\times y^{-4}\\\\=\frac{1}{x^{7} y^{4}}$

Thus, the simplified form of the expression is $\frac{1}{x^{7} y^{4}}$ .

8 0

4 years ago

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