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3 years ago

Jeff mordon drives 140 mile in 4 hours

Mathematics

2 answers:

bezimeni [28]3 years ago

8 0

Answer:

Jeff was traveling at 35 miles an hour

Step-by-step explanation:

140÷4

GREYUIT [131]3 years ago

6 0

Answer:

140/4=35mph

Step-by-step explanation:

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Which is the simplified form of the expression (6-4)-9

Veseljchak [2.6K]

I'll give you a hint. You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, and s-subtracting.

First you had to calculate with parenthesis first.

$(6-4)=2-9$

Then you add and subtract from left to right.

$2-9=-7$

Final answer $\boxed{=-7}$

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

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4 years ago

If h(x) = 6 – x, what is the value of (h circle h) (10)

Andrew [12]

Answer:

Step-by-step explanation:

h(x) = 6 - x

(h o h)(x) = h(h(x)) = 6 - h(x) = 6 - (6 - x) = 6 - 6 + x = x

(h o h)(x) = x

(h o h)(10) = 10

7 0

3 years ago

A is an m×n matrix.Check the true statements below:A. The kernel of a linear transformation is a vector space.B. If the equation

Bess [88]

Answer:

Results are (1) True. (2) False. (3) False. (4) True. (5) True. (6) True.

Step-by-step explanation:

Given A is an $m\times n$ matrix. Let $T :U\to V$ be the corresponding linear transformationover the field F and $\theta$ be identity vector in V. Now if $x\in Ker( T)\implies T(x)=\theta$ .

(1) The kernel of a linear transformation is a vector space : True.

Let $x,y\in Ker( T)$ , then,

$T(x+y)=T(x)+T(y)=\theta+\theta=\theta\impies x+y\in Ker( T)$

hence the kernel is closed under addition.

Let $\lambda\in F, x\in Ker( T)$ , then

$T(\lambda x)=\lambda T(x)=\lambda\times \theta=\theta$

$\lambda x\in Ker(T)$ and thus Ket(T) is closed under multiplication

Finally, fore all vectors $u\in U$ ,

$T(\theta)=T(\theta+(-\theta))=T(\theta)+T(-\theta)=T(\theta)-T(\theta)=\theta$

$\implies \theta\in Ker(T)$

Thus Ker(T) is a subspace.

(2) If the equation Ax=b is consistent, then Col(A) is $\mathbb R^m$ : False

if the equation Ax=b is consistent, then Col(A) must be consistent for all b.

(3) The null space of an mxn matrix is in $\mathbb R^m$

: False

The null space that is dimension of solution space of an m x n matrix is always in $\mathbb R^n$ .

(4) The column space of A is the range of the mapping $x\to Ax$

: True.

(5) Col(A) is the set of all vectors that can be written as Ax for some x. : True.

Here Ax will give a linear combination of column of A as a weights of x.

(6) The null space of A is the solution set of the equation Ax=0.

: True

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3 years ago

In 2015, three wide receivers for the Arizona Cardinals caught a total of 226 passes. Larry Fitzgerald caught 44 more passes tha

Ugo [173]

Answer:

ga sbgjdsbjdvbhjvbhjvcnb bn dsb sd

Step-by-step explanation:

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3 years ago

Solve for 3/4u = 12 . Simplify your answer as much as possible.

Wittaler [7]

Answer:

u = 16

Step-by-step explanation:

Given

$\frac{3}{4}$ u = 12

Multiply both sides by 4 to eliminate the fraction

3u = 48 ( divide both sides by 3 )

u = 16

6 0

3 years ago